What kind of classes should i take my junior year?

if your planning on going to a university, you should take at least 2 or 3 AP classes to prepare you for college and maybe even help you get college credit if you pass the AP test. If your school offers AP classes in Science or Math, you should take them, colleges will see that your school did offer it but see you did not take it, and this could mean being excepted or not. you should be taking AP Chem if you can, and maybe try to go to a summer math academy so you did not take Algebra 2, you should be taking Trig/Precal Honors.