<p>Some schools require four years of science, but what if during my senior year I simply self studied a science for AP? Would that count into the four years?</p>
<p>What selective colleges are looking for is “lab science” – one of the core subject requirements. The “lab” aspect is critical. So the short answer to your question is “no”.</p>
<p>Think about it. If colleges look at your transcript and see three years of science through junior year and none senior year, that will look like three years, not four. You could tell them you’re “self studying” a fourth science class, but why should they believe you? Your only “proof”, a (hopefully) strong AP score, will come in July, long after decisions come out.</p>
<p>4 is usually not impressive; 3 + AP would be even less so.</p>
<p>do they even check for senior year classes when you apply? (BTW, I’ve taken AP Bio and Chem)</p>
<p>Yes, colleges care about your senior courses and how you’re doing in them. That’s why they ask for mid-year reports, and shows why a self studied class senior year probably won’t do much for admissions.</p>
<p>"do they even check for senior year classes when you apply? "
YES. College applications require you to list all the classes you have taken AND those you are currently taking and plan to take your Spring semester.</p>