Tests.

Quizzes and tests seem to happen quite randomly in the curriculum I am using. I haven't really figured out a groove on that one. Bible quiz, spelling test, memory verses are all Thursdays (which is our Friday) but other than that they are a free for all.

My kids love them: here's why. 100% earns you 3 sticks, A or B earns you 2, C earns you 1.....

Incentives work! Haven't heard a complaint yet.