Has anyone implemented a reward or consequence system for virtual school? If so I'd love to hear what's working or not working for you.

Our rule has been that once all schoolwork and chores are done he can watch TV at the end of the day. That's worked pretty well. But lately I've been finding him doing other things on his computer when he's supposed to be doing meets. I know his school last year had a daily behavior chart that had some sort of reward and consequence built in but I'm not sure how it worked.