TOEFL 2026 Complete Guide: Format, Sections, Scoring & Study Strategy
A complete guide to the current TOEFL iBT format, including all four sections, the new task types, adaptive Reading and Listening, the 1–6 scoring system, and a practical study strategy.
The TOEFL iBT changed significantly in January 2026.
The test still measures the same four major abilities: Reading, Listening, Writing, and Speaking. However, the tasks inside those sections changed, Reading and Listening became adaptive, and TOEFL introduced a new 1–6 scoring scale.
That means a lot of older TOEFL preparation material no longer describes the test accurately.
Remember
The first step in preparing well is making sure you are preparing for the TOEFL that actually exists now.
This guide explains the complete TOEFL 2026 format, what every section tests, how the adaptive system works, how the new scoring scale works, and how to build an effective study plan.
TOEFL 2026 Format at a Glance
The current TOEFL contains four sections.
| Section | Task Types | Approx. Items | Approx. Base Time |
|---|---|---|---|
| Reading | Complete the Words, Read in Daily Life, Read an Academic Passage | 50 | 30 min |
| Listening | Listen and Choose a Response, Listen to a Conversation, Listen to an Announcement, Listen to an Academic Talk | 47 | 29 min |
| Writing | Build a Sentence, Write an Email, Write for an Academic Discussion | 12 | 23 min |
| Speaking | Listen and Repeat, Take an Interview | 11 | 8 min |
The test order is:
Reading → Listening → Writing → Speaking
The section times add up to roughly 90 minutes of base testing time.
However, that does not mean you should expect the entire testing experience to last exactly 90 minutes. ETS recommends allowing approximately two hours because directions and other parts of the testing process are not included in those basic section-time totals.
Remember
When one source says TOEFL takes around 90 minutes and another says around two hours, they may be measuring different things.
The section times total roughly 90 minutes, while ETS recommends allowing about two hours for the full testing experience.
Reading and Listening are adaptive, so exact timing and item counts can vary.
What Changed in TOEFL 2026?
The 2026 TOEFL update was much more than a small redesign.
Three changes matter especially for students.
1. Reading and Listening Are Adaptive
Reading and Listening now use a multistage adaptive structure.
You complete an initial stage, and your performance helps determine the difficulty of the following stage.
This means two students taking TOEFL may not receive exactly the same sequence or difficulty of questions.
2. The Task Types Changed
The current TOEFL uses a different set of tasks from many older versions of the exam.
There are now:
-
3 Reading task types
-
4 Listening task types
-
3 Writing task types
-
2 Speaking task types
That gives you 12 major task types to understand.
3. TOEFL Uses a 1–6 Score Scale
The current TOEFL reports section and overall performance primarily using a 1–6 scale.
Scores can include half-point increments such as 4.0, 4.5, 5.0, and 5.5.
These changes mean students using old TOEFL books, videos, or study plans need to be careful.
General English practice can still be useful.
Old format-specific strategies may not be.
Common Trap
A resource can contain excellent English advice and still describe an outdated TOEFL format.
Always separate language practice from current TOEFL-format practice.
How Adaptive Reading and Listening Work
Reading and Listening use multistage adaptive testing.
You complete an initial stage. Your performance helps determine the difficulty level of the following stage.
Your final result therefore depends not simply on counting how many questions you answered correctly, but also on the adaptive structure and difficulty of the material you received.
Students sometimes hear this and immediately start thinking:
How many questions do I need correct to reach the harder module?
That is not a useful test-day question.
ETS does not publish a simple rule such as:
“Get exactly eight questions correct and you enter the hard module.”
Trying to calculate your route while taking the test wastes concentration.
Your job is much simpler:
Answer the question in front of you as accurately as possible.
TEM Strategy
Do not spend time trying to decide whether your current module is “easy” or “hard.”
You cannot improve your answer by guessing which adaptive route you are on.
The adaptive structure also makes decision-making important.
If you spend too long trying to reach absolute certainty on every Reading or Listening question, you may damage your timing.
Accuracy matters.
So does knowing when you have enough evidence to move forward.
TOEFL 2026 Reading
The current Reading section contains three task types:
-
Complete the Words
-
Read in Daily Life
-
Read an Academic Passage
They test different forms of reading ability.
Task 1: Complete the Words
Complete the Words gives you a short passage in which parts of certain words are missing.
You must complete those words correctly.
At first, this may look like a spelling exercise.
It is not.
You need to combine:
-
vocabulary
-
grammar
-
word form
-
sentence meaning
-
context
For example:
The university library extended its weekend ho___ after stu____ requested more places to study late in the evening.
You could try to guess each word only from its first letters.
A better approach is to use the sentence.
weekend ho___
strongly suggests:
weekend hours
Then:
after stu____ requested
requires a plural noun that can perform the action:
students
The completed sentence becomes:
The university library extended its weekend hours after students requested more places to study late in the evening.
The context makes both answers much easier.
TEM Strategy
Before focusing on individual letters, predict the meaning and grammatical role of the missing word.
If you know that a blank requires a plural noun, verb, adjective, or adverb, you immediately eliminate many impossible answers.
Task 2: Read in Daily Life
Read in Daily Life uses shorter texts connected with realistic everyday situations.
These may include things such as:
-
notices
-
messages
-
announcements
-
instructions
-
schedules
-
short informational texts
The challenge is usually not reading an enormous passage.
The challenge is understanding quickly:
What is this text trying to communicate?
A useful process is:
-
Identify the type of text.
-
Identify its purpose.
-
Locate the information relevant to the question.
-
Separate what the text actually says from assumptions.
Imagine a university notice says:
The north entrance to the library will be closed Monday through Wednesday. Students should use the entrance beside the student center during this period.
If the question asks:
What should students do on Tuesday?
You do not need to analyze every sentence deeply.
The relevant information is:
Use the entrance beside the student center.
This kind of reading rewards quick identification of purpose and relevant detail.
Task 3: Read an Academic Passage
Read an Academic Passage uses more academic material.
You may need to understand:
-
the main idea
-
important details
-
vocabulary in context
-
relationships between ideas
-
implied meaning
-
conclusions supported by evidence
A weak approach is trying to memorize every sentence.
A better approach is building a simple structure in your mind:
Topic → Main Point → Paragraph Purpose → Supporting Evidence
Suppose a paragraph begins by explaining a scientific theory and then describes two experiments.
You do not need to memorize every number from those experiments immediately.
First understand:
The experiments are being used as evidence related to the theory.
That structural understanding makes later questions much easier.
Remember
Reading comprehension is not memorizing the passage.
It is understanding how the information fits together.
For detailed strategies and worked examples for all three tasks, use TEM's dedicated TOEFL 2026 Reading Guide.
TOEFL 2026 Listening
The Listening section contains four task types:
-
Listen and Choose a Response
-
Listen to a Conversation
-
Listen to an Announcement
-
Listen to an Academic Talk
These tasks test more than whether you can hear individual English words.
You also need to understand:
-
purpose
-
meaning
-
speaker intention
-
important details
-
organization
-
implications
Listen and Choose a Response
You hear a short spoken prompt and choose the response that fits naturally.
Imagine you hear:
“Could you send me the notes after class?”
Which response is most appropriate?
A. The class meets in the science building.
B. Sure, I'll email them to you tonight.
C. I took notes because the lecture was difficult.
D. The professor sent an email yesterday.
The correct answer is B.
Why?
The speaker is making a request.
Answer B responds directly to that request.
The other options contain related vocabulary such as class, notes, professor, and email, but related vocabulary does not make a response appropriate.
| Option | Decision | Why |
|---|---|---|
| A | Reject | Talks about the class location instead of answering the request |
| B | Keep | Directly agrees to send the notes |
| C | Reject | Mentions notes but does not respond to the request |
| D | Reject | Mentions email but changes the topic |
Common Trap
A repeated word from the audio does not make an answer correct.
Identify what the speaker is trying to do before choosing a response.
Conversations, Announcements and Academic Talks
For longer audio, trying to write down everything usually makes listening harder.
Instead, listen for structure.
Ask:
-
Purpose: Why is the speaker talking?
-
Problem: What issue has appeared?
-
Change: What changed?
-
Important detail: Which information affects the situation?
-
Attitude: How does the speaker feel?
-
Next step: What will probably happen?
-
Organization: How do examples connect to the main idea?
Suppose a student talks to a professor because an assignment deadline conflicts with a university event.
Your notes do not need to reproduce every line.
Something like this may be enough:
problem → deadline conflict
reason → university event
professor → allows later submission
Those notes preserve the structure of the conversation.
TEM Strategy
Good Listening notes record meaning and structure, not every sentence.
This becomes especially important during academic talks, where examples may be less important individually than understanding why the speaker introduced them.
TOEFL 2026 Writing
The current Writing section contains:
-
Build a Sentence
-
Write an Email
-
Write for an Academic Discussion
The three tasks test very different abilities.
Build a Sentence
You receive words or groups of words and arrange them into a grammatical sentence or question.
For example:
because of the weather / the professor / canceled / the outdoor class
Correct:
The professor canceled the outdoor class because of the weather.
The fastest approach is usually to find the sentence skeleton first.
Ask:
-
What is the subject?
-
What is the main verb?
-
What is the object or complement?
-
Are there dependent clauses?
-
Which words naturally belong together?
Start with:
Subject → Verb → Object
Then attach the remaining information.
Do not immediately move every piece around randomly.
Recognize the structure first.
Write an Email
Write an Email asks you to communicate appropriately in a realistic situation.
You may need to:
-
request something
-
explain a problem
-
apologize
-
recommend something
-
provide information
-
suggest a solution
Before writing, answer three questions:
Who am I writing to?
Why am I writing?
What do I need this person to understand or do?
Consider this response:
Hey professor, I can't come Friday. Tell me what I should do.
The meaning is understandable, but the tone is poor.
The opposite extreme is also unnecessary:
I humbly request that you kindly consider the possibility of permitting me to attend an alternative laboratory session.
That sounds unnatural and unnecessarily formal.
A better sentence is:
Would it be possible for me to attend another laboratory session next week?
It is clear, polite, and natural.
Remember
Good TOEFL writing is not about making every sentence sound sophisticated.
It is about communicating the right message clearly and appropriately.
Write for an Academic Discussion
In this task, you contribute to an online academic discussion.
A professor presents a question, and other students may provide their opinions.
You then add your own response.
A reliable structure is:
Position → Reason → Explanation or Example
Imagine the question asks:
Should universities require students to take courses outside their major?
A weak answer:
I think students should study other subjects because it is good and students can learn more things.
The position is clear.
The development is weak.
A stronger response:
I believe universities should require students to take at least a few courses outside their major. For example, a computer science student may develop excellent technical skills but still struggle to explain complex ideas to people outside the field. Courses in writing or communication can develop skills that are useful in almost any profession.
The second response is stronger because it does more than repeat the opinion.
It explains why the opinion makes sense.
For detailed strategies, worked examples, email structure, and Academic Discussion practice, use TEM's dedicated TOEFL 2026 Writing Guide.
TOEFL 2026 Speaking
The current Speaking section has two task types:
-
Listen and Repeat
-
Take an Interview
They require very different strategies.
Listen and Repeat
You hear a sentence and reproduce it as accurately as possible.
The challenge involves:
-
listening accuracy
-
working memory
-
pronunciation
-
grammar
-
rhythm
-
accurate reproduction
The biggest mistake is trying to remember the sentence as isolated words.
Imagine you hear:
Students who submitted the form before Friday will receive confirmation by email.
Instead of remembering:
Students / who / submitted / the / form / before...
process meaningful groups:
Students who submitted the form
before Friday
will receive confirmation by email
Those chunks are much easier to hold in working memory.
TEM Strategy
Hear the sentence in meaningful phrases rather than trying to memorize every word separately.
Another important point:
Do not paraphrase.
If the original sentence says:
The meeting has been moved to Thursday afternoon.
saying:
The meeting will happen later this week.
may preserve the general meaning, but it does not accurately repeat the original sentence.
Accuracy matters.
Take an Interview
Take an Interview simulates a short interview.
You answer questions about experiences, preferences, and opinions.
A useful speaking structure is:
Answer → Reason → Example → Short conclusion
Imagine the interviewer asks:
Do you prefer studying alone or with other students? Why?
Weak:
I prefer studying alone because it is better for me and I like studying alone.
Stronger:
I usually prefer studying alone because I can control my own pace. For example, before a difficult math exam I may need to spend much more time reviewing one topic than another. In a group, everyone may want to study something different. I still study with friends occasionally, but for serious review I am usually more efficient alone.
The second response is stronger because the idea develops naturally.
It does not require complicated vocabulary.
It requires structure.
Common Trap
Repeating the same opinion in different words is not development.
Add a reason, explanation, or concrete example.
TOEFL 2026 Scoring
The updated TOEFL uses a 1–6 score scale.
You receive scores for:
-
Reading
-
Listening
-
Writing
-
Speaking
Each section is reported on the 1–6 scale, including half-point increments.
For example:
| Section | Example Score |
|---|---|
| Reading | 5.0 |
| Listening | 4.5 |
| Writing | 4.0 |
| Speaking | 4.5 |
| Overall | 4.5 |
The overall score reflects performance across all four sections.
The new scale is also aligned more directly with CEFR proficiency levels.
| TOEFL Score | CEFR Level |
|---|---|
| 6.0 | C2 |
| 5.0–5.5 | C1 |
| 4.0–4.5 | B2 |
| 3.0–3.5 | B1 |
| 2.0–2.5 | A2 |
| 1.0–1.5 | A1 |
During the transition to the new system, TOEFL score reports can also include a comparable overall result on the older 0–120 scale.
That helps universities interpret results while institutions update their requirements.
What Is a Good TOEFL Score?
There is no single TOEFL score that is automatically “good.”
The more useful question is:
What score does my university or program require?
One university may accept a particular score while another expects something higher.
Some programs may also care about minimum scores in individual sections.
For example, a program that requires extensive classroom participation may place particular importance on Speaking.
Do not choose your target because a random website labels one band:
good
excellent
or:
competitive
Check the actual requirement of the institution and program you intend to apply to.
A dedicated TEM TOEFL Score Guide 2026 will explain the new scale, CEFR levels, and old-score comparisons in greater detail.
The Best TOEFL Study System: Learn → Practice → Review
Knowing the format is necessary.
It is not enough.
You can memorize every current TOEFL task name and still perform poorly.
A better preparation system has three stages:
Learn → Practice → Review
Step 1: Learn
Before doing large amounts of practice, understand what each task actually requires.
For every task ask:
-
What do I see or hear?
-
What do I need to produce?
-
What skill is being tested?
-
What mistakes are common?
-
What strategy should I use?
For example, if you do not understand what Listen and Choose a Response measures, repeating 100 questions may simply reinforce a weak approach.
Learn the decision process first.
Step 2: Practice
Practice should be deliberate.
Do not only complete entire tests repeatedly.
Suppose you keep missing Complete the Words questions.
Your errors may come from completely different problems:
-
unknown vocabulary
-
poor spelling
-
incorrect grammar
-
misunderstanding context
-
rushing
Those problems require different solutions.
The same idea applies to every section.
| Mistake | Likely Cause | Better Practice |
|---|---|---|
| Reading inference wrong | Added unsupported assumption | Require evidence from the text |
| Listening detail missed | Notes too long | Record only key information |
| Email incomplete | Missed part of prompt | Make a short requirement checklist |
| Interview answer too short | No development structure | Use answer → reason → example |
| Repeat sentence inaccurate | Working-memory problem | Practice sentence chunking |
Step 3: Review
This is the stage many students skip.
Imagine you complete a Reading section and get a certain result.
That number tells you what happened.
It does not explain why.
You need to investigate the mistakes.
Ask:
-
Which task type caused the most errors?
-
Did I misunderstand the English?
-
Did I understand the text but use a poor strategy?
-
Did timing cause the error?
-
Did I add assumptions?
-
Did I miss important details?
-
Is the same mistake appearing repeatedly?
Your review should produce a specific change.
For example:
Problem: I keep choosing Reading answers that sound logical but are not supported.
Change: Before selecting an inference answer, I will identify the exact evidence supporting it.
That is useful review.
Simply looking at your score and immediately starting another test is not.
Remember
Practice measures your performance.
Review is where you turn mistakes into improvement.
A Practical 4-Week TOEFL Study Plan
Your exact schedule depends on your current English level and your test date.
However, this structure gives you a useful framework.
Week 1: Learn the Test and Diagnose Weaknesses
Your goals are to:
-
understand all current task types
-
complete representative questions from every section
-
identify weak areas
-
begin an error log
Do not focus only on an overall score.
Instead, record performance by task.
For example:
Reading
Complete the Words: strong
Read in Daily Life: strong
Academic Passage inference: weak
That tells you much more than simply writing:
Reading: weak
It shows you what actually needs work.
Week 2: Target Weak Skills
Spend more time on the skills causing repeated problems.
For example:
Reading
-
vocabulary in context
-
inference
-
passage structure
Listening
-
speaker intention
-
implied meaning
-
selective note-taking
Writing
-
sentence structure
-
email tone
-
idea development
Speaking
-
sentence memory
-
pronunciation
-
developing interview answers
You should still practise stronger areas occasionally.
But your weakest important skills deserve more attention.
Week 3: Add Timing
Once your strategy is reasonably accurate, begin adding realistic time pressure.
Accuracy should come first.
Then speed.
If your method is wrong, becoming faster at that method does not help.
During this week:
-
mix different task types
-
complete timed sections
-
practise making decisions efficiently
-
avoid spending excessive time chasing certainty
The goal is to make your strategy increasingly automatic.
Week 4: Simulate and Refine
Now complete more realistic sections and full tests.
After every major practice session:
-
Record your result.
-
Identify repeated mistakes.
-
Return to the underlying skill.
-
Practise that skill separately.
-
Test yourself again.
The ideal cycle is:
Simulation → Diagnosis → Targeted Practice → Simulation
Not:
Test → Test → Test → Test
Full tests identify weaknesses.
Focused practice fixes them.
How to Study Vocabulary for TOEFL
Vocabulary matters across almost every section.
It helps with:
-
Complete the Words
-
academic Reading
-
Listening comprehension
-
Writing
-
Speaking
But memorizing enormous lists of isolated words is not always efficient.
Instead of learning:
significant = important
learn the word in context:
The researchers found a significant difference between the two groups.
Now you learn:
-
meaning
-
grammar
-
natural usage
You also become more likely to recognize the word in Reading and use it naturally in Writing or Speaking.
Try to learn not only individual words but also common combinations.
For example:
reach a conclusion
provide evidence
significant increase
raise a concern
This gives you vocabulary that is easier to understand and use.
How to Study Grammar for TOEFL
Grammar is not useful only because TOEFL includes Build a Sentence.
Grammar also helps you:
-
understand complex Reading sentences
-
identify relationships between ideas
-
write clearly
-
speak accurately
-
reconstruct words from context
Focus on useful structures such as:
-
subject-verb agreement
-
verb tense
-
question formation
-
relative clauses
-
conditionals
-
comparison structures
-
conjunctions
-
dependent clauses
-
independent clauses
-
prepositional phrases
Do not study grammar only so you can name the rule.
Study it so you can recognize and use the structure quickly.
Keep an Error Log
One of the simplest ways to improve your preparation is to keep a record of repeated mistakes.
Your error log does not need to be complicated.
| Task | Mistake | Cause | What I Will Do Next Time |
|---|---|---|---|
| Academic Reading | Chose unsupported inference | Answer sounded logical | Find exact evidence first |
| Listening | Missed final decision | Took too many notes | Listen for outcome or next action |
| Forgot second requirement | Started writing immediately | Check every prompt requirement | |
| Interview | Answer ended too early | No example | Add reason + example |
| Repeat | Lost final phrase | Tried to memorize word by word | Listen in chunks |
After several practice sessions, patterns will start appearing.
Those patterns are much more useful than a collection of final scores.
How to Know If You Are Ready for TOEFL
Do not judge readiness from one unusually good practice result.
Look for consistency.
You are becoming test-ready when:
-
you understand every current task type
-
your timing is predictable
-
you know which strategy to use for each task
-
repeated mistakes are becoming less common
-
you can explain why your wrong answers were wrong
-
your Speaking answers develop naturally
-
your Writing responses clearly satisfy the task
-
you can remain focused across a complete test
-
your practice performance is reasonably stable
The goal is not perfect performance.
The goal is repeatable performance.
A student who occasionally gets an excellent result but performs very differently every time still has weaknesses to investigate.
TOEFL 2026 Test-Day Checklist
Before your test, you should be able to answer yes to most of these questions:
-
Do I understand all current TOEFL task types?
-
Do I understand that Reading and Listening are adaptive?
-
Can I avoid wasting time guessing my adaptive route?
-
Can I use context in Complete the Words?
-
Can I identify purpose quickly in daily-life Reading?
-
Can I understand the structure of an academic passage?
-
Can I take selective Listening notes?
-
Can I identify speaker intention?
-
Can I construct English sentences quickly?
-
Can I write an email with appropriate tone?
-
Can I develop an Academic Discussion response?
-
Can I repeat sentences without paraphrasing?
-
Can I develop an interview answer with a reason and example?
-
Do I know my university's actual TOEFL requirement?
-
Have I practised under realistic time pressure?
-
Do I review the reasons behind my mistakes?
If several answers are no, you have already found your next study priorities.
Common TOEFL 2026 Preparation Mistakes
Using Outdated Study Material
Older material can still improve general English.
But old format-specific practice may prepare you for tasks that are no longer part of the current test.
Always check when a resource was created or updated.
Doing Too Many Full Tests
Full tests are valuable.
Doing one every day is usually not the best use of your time.
A full test identifies problems.
Focused practice fixes them.
Use both.
Looking Only at Your Score
Your score tells you the outcome.
Your mistakes tell you what to improve.
Track both.
Memorizing Responses
Memorized answers are fragile.
A slightly different prompt can make them useless.
Memorize structures and decisions, not entire responses.
For Speaking:
Answer → Reason → Example
For an Email:
Purpose → Necessary information → Request or next step
For Academic Discussion:
Position → Reason → Explanation
These are flexible.
A memorized paragraph is not.
Trying to Sound Too Advanced
Clear English is better than complicated English used incorrectly.
This matters especially in Writing and Speaking.
Do not choose a difficult word only because it sounds academic.
Choose the word that expresses your meaning accurately.
Ignoring Weak Sections
Some students spend most of their time practising the section they already enjoy.
That feels productive because they perform well.
But improvement usually comes from working on weaknesses.
Your study time should not be distributed only according to preference.
Practice TOEFL 2026 on TEM
Understanding the format is the first stage.
You also need realistic practice.
TEM provides TOEFL 2026 practice tests where you can work with the current task types and review your performance.
For open Writing and Speaking responses, TEM can also provide AI-assisted feedback.
Use that feedback to identify patterns such as:
-
incomplete task responses
-
weak development
-
unclear organization
-
grammar problems
-
vocabulary issues
-
weak Speaking structure
-
areas that repeatedly need improvement
AI feedback should be treated as a preparation tool, not as an official ETS score.
The most valuable question is not:
What number did the AI give me?
It is:
What should I improve before my next attempt?
Explore TOEFL 2026 practice tests on TEM
You can also explore the complete collection of TEM TOEFL learning resources:
TOEFL 2026 Frequently Asked Questions
Is TOEFL different in 2026?
Yes.
TOEFL introduced a major update in January 2026.
The current test uses new task types, adaptive Reading and Listening, and a new 1–6 scoring scale.
How many sections are on TOEFL?
There are four:
-
Reading
-
Listening
-
Writing
-
Speaking
Is the whole TOEFL adaptive?
No.
Reading and Listening use multistage adaptive testing.
Writing and Speaking do not use the same adaptive module structure.
How many TOEFL task types are there?
The current format contains 12 major task types:
-
3 Reading
-
4 Listening
-
3 Writing
-
2 Speaking
How long is TOEFL 2026?
The base section times total approximately 90 minutes.
However, ETS recommends allowing roughly two hours for the complete testing experience because the section totals do not include every part of the process.
Is TOEFL still scored out of 120?
The main current scoring system uses a 1–6 scale.
During the transition period, TOEFL score reports can also provide a comparable overall result using the older 0–120 system.
What is a good TOEFL 2026 score?
There is no universal good score.
Check the exact requirement of the university and program you plan to apply to.
Can I use old TOEFL books?
Yes, but selectively.
Old vocabulary, grammar, Reading, and Listening exercises may still improve your English.
Old task-specific strategies may no longer match the current TOEFL.
Should I take full practice tests every day?
Usually not.
Full tests are useful for measuring performance and testing stamina.
Focused practice is often better for correcting specific weaknesses.
Use both.
Final Advice
The TOEFL 2026 format looks very different from older versions of the exam, but the preparation principle is straightforward.
First:
Learn what each task requires.
Then:
Practise the skill under realistic conditions.
Finally:
Review why your mistakes happened.
That creates the cycle:
Learn → Practice → Review → Repeat
Do not measure your preparation only by how many tests you complete.
Measure it by how many weaknesses you identify and actually correct.
If you understand the current format, practise the right skills, and review your mistakes carefully, TOEFL becomes much more predictable.
And that is exactly what good preparation should do.