<p>So if it says like how many years of science classes I have taken and I have taken 2 full-year science courses over 2 years of my hs career, in those years have I taken 4 years of science courses or even if I take 2 science courses over one year, that only counts as one year of science?</p>
<p>It is a course year. One year of physics is one year, one year of chemistry is one year, so if you take them both in the same year you have 2 years towards any stated requirement.</p>