How long is a Toefl score good for?

Related questions

1. What is Toefl practice test?
2. What is the highest Toefl score?
3. What kind of questions are asked in Toefl?
4. Is 86 a good Toefl score?
5. Is Sat harder than ielts?
6. Is 88 a good Toefl score?
7. Does Toefl have math?
8. Which is better SAT or Toefl?
9. Is ACT reading easier than sat reading?
10. Do you get your Toefl scores immediately?

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2. #higher
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4. #after
5. #institutions
6. #individual
7. #requirements
8. #there
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10. #limit
11. #number
12. #toefl
13. #period
14. #score
15. #education
16. #valid
17. #scores
18. #passing
19. #agencies
20. #times
21. #cannot