How to raise my grades?

Cut down your time on Facebook. I don't know do you have it or not, but many of my clmates have them and they say it is consuming too much time. For math, remember to work your problems carefully on the tests, so you don't get count off for careless errors. For chemistry test, you should study the things beforehand instead of everything before the night before the test. Um, ap English, it's really hard to do well in English without having already a strong background. Try to incorporate stronger vocabulary in your essays. I don't know have you done all these, but these are some good advices. Don't overload yourself with the extracurricular activities. Hope I help.