:woohoo:Two years ago I was in high school. So I have recent experience with this. All I did was brought my lunch to school, brought another lunch/meal to eat after school. Then I would go to whichever sport practice I had and/or the gym. Then go home and eat again, and then eat later on before I went to sleep. Its not really hard, just make a list for your mom of what groceries you would like. Im sure she will buy them for you, and then you can make what you want. I have cooked for myself for many years, since Ive eaten different than my family, but if your mom cooks something every night for you then eat it. Its no big deal really. The only other thing I would say is eat more for breakfast, and bring your lunch to school(that also makes it cheaper, since I bet your mom will buy the food for you).
EDIT: I also don't get huge pumps from AP, only once in awhile will I feel a pump after eating carbs like some claim. But I am still recieving great results, and thats all I care about.
I fully agree with LikeV. I think you would make large strides in your gains if you had a bigger breakfast, definetely took a lunch to school with you (make it the night before, yeah it's an inconvenience, but who ever said puttin' on serious muscle wasn't a pain in the ass?) and possible take a small container with you to school with protein powder in it that you can take some time in the afternoon before you workout.