<p>At the moment, I'm a junior in high school, but if I wanted to apply for an early decision for the CALS, would I be able to do it? My school is just adding AP Chemistry to its course quantity next year (too late to take it now), lacks AP Physics, and allows only students that take three years in science courses in the school to take AP Biology (seniors only, in other words). If I decide to take the Biology SAT, when should I do it? Also, will the admissions officers negatively mark me if I'm just taking AP Biology senior year?</p>
<p>P.S.: Disregard any thoughts of familiarity if you have any. Answer the question if you can.</p>