Wanting to study in the US will often mean you'll need to take either the SAT or ACT test as part of your application. Whilst these tests are primarily an American requirement, some universities in other countries may also accept or request them, so when you have found a course of interest, always check its entry requirements carefully to see whether SAT or ACT results are needed.
What are the SAT and ACT tests?
In short, they measure your academic ability and give institutions an idea of what your potential for success is. They assess your comprehension, writing and language skills and computational abilities.
What is the difference between the SAT and ACT?
Most institutions will accept either the SAT or ACT test, so consider taking the test which matches your strengths, and therefore, where you are likely to score most highly. Although they are similar, there are some differences which may help you decide on which to do.
Length
Firstly, although they are both similar in length, the ACT fits more questions into this time, which can make candidates feel rushed.
Maths
Whilst the topics vary slightly, most importantly is the weighting that is given to the maths element in both tests. The ACT uses your maths score as 25% of your final result, whereas the maths element in the SAT makes up 50% of your final score. Your confidence in your ability to succeed in maths will determine whether you take the ACT or SAT.
Science
If you have a good aptitude for science, then taking the ACT would be more beneficial for you as it includes a Science Reasoning section which makes up 25% of your final score.
Language used
Both assessments have English and language skills making up 50% of the final grade. However, some speakers of English as a second language have reported finding the ACT more challenging in this area, citing the use of colloquial language and idiomatic phrases.
If English is your second language
Most institutions will require you to show you are capable of studying in English by submitting your results for either the Test of English as a Foreign Language (TOEFL), International English Language Testing System (IELTS) or Pearson Test of English (PTE). Some institutions may accept other tests, including newer assessments such as the Duolingo English Test, which combines a traditional language test with a video interview to evidence your competency in English.
Finding a test centre
Once you have chosen your preferred test, register on the CollegeBoard website for the SAT and the ACT website (check the registration dates too), and book a test at a test centre local to you. Test centres outside the US can be more limited in availability, so you are advised to book early to secure a place.
Practising for the SAT and ACT
There are lots of opportunities for you to practice your SAT and ACT skills. Check out The College Board SAT Practice Tests page or the ACT Test Prep web page.
Good luck with your tests!
Updated April 2026
