<p>Some colleges accept the ACT in lieu of both the SAT I and IIs. My daughter applied to six selective schools, including three Ivies, and they were all like this. Nice because her SAT IIs weren't very good ... she just sent in the ACT which was. She liked the format of the ACT better than the SAT I and so never even took the latter.</p>
<p>Yes, there are some schools which ask for the ACT and SAT IIs. Fortunately, she wasn't interested in any of them! She also wasn't interested in any of the schools that require or express a preference for the SAT I (in years of asking people just who is in this category, I've only been directed to the web sites of Princeton, Wake Forest, and Randolph Macon).</p>
<p>I don't really know if your ACT would "cover" for lower SAT IIs. I guess you have to see if your SAT I score is that much better than the ACT score to make it worthwhile to see.</p>
<p>You can take practice tests of both the SAT I and ACT and see if you do better on one or the other.</p>
<p>You also might do better on the SAT IIs in other subjects. People keep saying that colleges only look at your two top scores.</p>
<p>My daughter chose not to retake the SAT IIs because she couldn't figure out where she went wrong. She came out thinking she had done well. So it isn't as if she would have known, "I need to study X and Y."</p>
<p>Interestingly, my daughter also took the Math IC and the Chem tests. What I've heard from others is that the Math IC is so easy that the curve is really wicked. Make a few careless errors and it can really hurt. Chem seems to be dependent on how well your course happened to fit what CB chose to put on the test that year. I've heard of kids who had the top A's in community college chemistry taking the chemistry SAT II and doing as you did or even worse. Its curve may also be bad. </p>
<p>I found it very frustrating not knowing exactly what would be on the test. The prep books do not agree with one another. The CB descriptions are vague, at times. We homeschooled and so I think my daughter's results were a function of my choice of textbook, rather than anything to do with her. </p>
<p>The tests are supposed to reflect the "usual" content of particular courses, not any particular one. Hence, those teachers who build up a knowledge of what is important to cover or just happen to get it right will have kids who get better results.</p>
<p>I hung out on discussion lists for teachers of AP subjects. They spent a great deal of time reviewing past tests and trying to figure out what are the best books to use, what might show up on the test this year, and the like. Maybe the same sort of process is at work for SAT IIs ... </p>
<p>You don't mention your proposed field. For math/science/engineering, you may need math (the IIC) and science SAT IIs. But if you have some good AP or CLEP results in math or science, it may not be essential. If you are going into a humanity, I don't think the IC and the chem would be critical -- colleges would look at what you did on humanities testing.</p>
<p>My opinion is based on what I would do as an ad comm member, not any specific information as to what they actually do. But my daughter's math and science ACT subscores were only at the 92nd percentile and she got into an Ivy -- but her field is unrelated to both and her other subscores were very high. So maybe they (or at least some of them) do what I think they should!</p>