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How to Predict Your TOEFL Score: The Math

how to predict toefl score

To predict your TOEFL score, you need to do a lot of practice tests. You also need to score your practice performance based on the TOEFL’s 30 point scale.

How to Predict your TOEFL Score, Step 1: Figure out how many points you earned in each section of a TOEFL exam

To give yourself practice TOEFL scores and predict your real TOEFL score, you first have to figure out how many points you earned in each section of a practice test. (The method for doing this varies from section to section; see the links at the end of this post for more information.)

Whenever you complete a practice TOEFL Reading or Listening section, calculate the number of points you earned. This is not as simple as checking the answer key. You also need to know how many points each question is worth, and whether or not you earned partial credit on questions that are worth more than one point.

For TOEFL Speaking and Writing, you need to calculate your rubric-based score for every practice section you complete. Some TOEFL preppers self-score by consulting the official TOEFL Speaking rubrics as well as the TOEFL Writing score guides.

For most people, however, self-scoring is a difficult, less-than-reliable way to calculate Speaking and Writing points. It’s better to go to someone else for getting feedback and unofficial scoring on your Speaking and Writing Tasks. Usually, this kind of feedback comes from a TOEFL tutor, but sometimes you can also get scoring help from other sources. To find good TOEFL Speaking and Writing Feedback, check out these Magoosh TOEFL Blog posts:

How to Predict your TOEFL Score, Step 2: Convert your point score into a percentage score

Every point score can translate into a percentage score. To see how this works, let’s look at some hypothetical scores for the sections of a practice TOEFL. 40 out of 48 points in TOEFL Reading is a score of 83%. 39/47 in a Listening Section would also be an 83%. In TOEFL Speaking, an average task score of 3.67 out of 4 is 92%. Finally, a 4/5 on TOEFL Writing is 80%.

How to Predict your TOEFL Score, Step 3: Convert your percentage score into a scaled TOEFL score

Each TOEFL section has a different number of questions and a different number of earnable points. But in the final score report, all four sections are measured on a scale of 0 to 30. So convert your percentage score on you practice TOEFL exam to a percentage of 30. This will give you a pretty good idea of what your real TOEFL score will be. In the examples above, 83% of 30 gets you a 25 in TOEFL Reading and Listening. Your 92% in TOEFL Speaking is a 28. And the 80% in Writing comes out to 24.

Average all of these numbers together, divide the result by 4, and you have a whole-exam scaled score. 25 + 25 + 28 + 24 equals 102. 102 divided by 4 = 25.5. 25.5 rounds up to a 26 on the TOEFL.

How to Predict your TOEFL Score, Step 4: Do several practice tests, and average together several whole-test scores

The most accurate predictor of your TOEFL score is your performance across several different full practice tests. (Preferably you should use official practice TOEFL exams from ETS.) Let’s say that you take five practice TOEFL tests from ETS, with the following scores: 26, 24, 27, 25, 24. Add these scores together to get 126, divide 126 by 5, and you have an average of 25.2. Round this down to 25, and you can reasonably predict your TOEFL score will be about 25. If that’s below your target score, do more practice tests, reassess your average, and predict your score again.

The math for scoring different sections of the TOEFL

Each section of the TOEFL has a different number of total points, and a different way of calculating raw scores. To help you master the math of predicting your TOEFL score, I’ve created score prediction tutorials for the four sections of the TOEFL. Here are the links:

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