I know when I was growing up, the small rewards I got for being good, i.e. praise from a teacher or trust to do more stuff, were enough to continue being good. If I was getting bribed to behave, I’d just fool them into thinking I was good so I’d get the money, but be a little shithead where they didn’t see it. This plan isn’t going to set positive patterns for high school. It’s just going to make kids want the money and wonder where it went when they leave this cute little program.