<p>I'm also taking the SAT1.</p>
<p>No one has to take the subject tests, they’re just highly recommended for top tier schools. If that’s what you’re aiming for, you should take two or three.</p>
<p>It depends on the school. Some schools will accept the ACT with writing in place of the SAT subject tests. I know that Penn and BU has this policy. Other schools will still require subjec tests.</p>
<p>Momjr is correct.</p>
<p>It depends on where you intend to apply. Go here for a list of colleges that require, recommend, or consider SAT IIs. In the required column you will see that some have an * next to the number. That means the college takes the ACT in lieu of both the SAT and SAT IIs. If no * then SAT IIs are still required even if you submit ACT: [Compass:</a> Admissions Requirements](<a href=“SAT Subject Test Requirements and Recommendations - Compass Education Group”>SAT Subject Test Requirements and Recommendations - Compass Education Group)</p>