How can i get on my moms good side?

so i been actin a lil retarted i HATE skool i have no friends, da cles keep gettin harder no matter how much i try 2 study it seems lke im failin EVERYTHIN. so i cut all week last week & im punished i understand dat && im puttin up wit it even tho it seems lke jail but i did wrong so i understand but my mom thinks im a loser & she hates mee i just wanna get back on her good side! wat can i say to her ?