How do i become a straight A student?

i want to become a straight A student Why?.. because guess what!? my dad gives me money for every A i get! not just that but.. i want better grades it's hard the work! right now i'm in 8th grade but soon to be in high school i really don't wanna bad job in the future and i actually wanna make money and live in a house and get a car so by that means i gotta get good grades and by that i gotta get a job then go to college to make more money plus i need good grades for college! and so on getting a college degree is importent for me cause if you enter for a job they'll mor eliekely pick you for the job before college you gotta get good grades in highschool so i need straight A's HELP! i actually do really hate school but i wanna suck it up and get good grades! i still will always think school is useless and a waste of my time! but thanks!!! (: