SCM style and SAT scores

Hello, I am researching the different styles of homeschooling and am extremely interested in the SCM approach.  One of the main questions I have is how do highschool students taking SAT or other traditional tests do on the exams since the method does not focus on this type of testing.  I live in a country where getting into college is extremely difficult and admittance is solely based on test scores, so this is a real concern for me.

Thank you!!!