Question

How to maintain everything learned from your school year through the summer break

Answer 1

you could always do some virtual school.

Answer 2

you don't. you'll learn for the schoolyear, get good grades, please your teachers and parents, have summer, forget everything, start new the next school year, repeat process

Answer 3

You could stay here on OpenStudy and help people...lol

Answer 4

check out khanacademy.org. They have good tutorials that will help you refresh your memory