My son is at GW and in TAG for reading and math. For reading, he has additional projects beyond what is assigned for his regular honors class. That's fine by us. Frankly, although he's smart, he's not super interested in language arts, and given his interest level, the amount of work assigned in his elementary school TAG language arts was beyond what he wanted to do, though he was certainly capable of it.
We are a bit disappointed in TAG for math. Currently, he is in Algebra, which does not have an honor option. He finds the class to be fairly easy. The TAG assignment he was given was reasonably interesting, but didn't really take much time or work.