Wiktionary
house points
n. 1 (context usually in plural British English) point awarded to a member of the house of a grammar school or public school for sporting and other achievement. 2 (context humorous English) "Points" awarded in jest in a domestic environment for doing some task (such as clearing out the garage.)
Usage examples of "house points".
While you are at Hogwarts, your triumphs will earn your house points, while any rulebreaking will lose house points.