We're getting close to that point, too, in a couple of subjects. I took math through college calculus, but there is NO WAY that I could teach math that advanced. My husband could, but time is a problem. He has none! In a year or two, we'll probably have to get a tutor or find an advanced math class for him. We're getting close on science as well. He needs more hands-on stuff, and I'm lazy...

A tutor for science seems like a perfectly reasonable part of Plan B. Go for it!

Kriston