SAT Subject Tests and GCSE?

Test Preparation SAT Subject Test Preparation
1

Hi, I was wondering if taking the GCSEs (physics, bio, chem) is enough for taking the SAT subject tests? And, which is harder, the IGCSE or the GCSE?
Thank you in advance :)))

2

if you mean enough in terms of content covered, the subject tests cover AS knowledge and a bit of a-level as well so i don’t think they’re enough. And IGCSE’s are definitely harder but then again it depends on the exam board x

3

Thank you!