I don't think anything similar can be feasibly implemented. It has been suggested on Meta Stack Exchange that we implement a system by which posts are made publicly view-able only once they have been reviewed. With such a system, you won't see any homework questions in the first place. But those proposals weren't well-received.
The closedclosest I can think of to what you were saying is something which counts how many people with Vote-to-close privileges have viewed the post and chosen not to vote to close it, but even that's completely messed up because there are several high-rep users who don't use the review queues, and people with <3k rep can cast helpful flags.
So I'm sorry, but the only option I see is getting a bit more familiar with the homework policy. It doesn't take too long :) Or once you have the 3k rep privileges, you'll be able to see if there are any pending close/reopen votes on a post.