Question

Пожалуйста проверьте на грамотность   1. math,music science were my core subjects at school. 
2. i studied two optional subjects chemistry and biology. 
3. i use the bus to get to school. 
4. the school year begins in september and ends in may 
5.my holidays in november, january. april and summer 
6.after school. students can go to college

Answer 1

Всё правильно я проверил!!!!!!!!!!!!!!!!

Answer 2

My core subjects at school are math. music. and science.

Где перечмсляешь несколько предметов- добавляй are