There is one at the Boulder High School and another at Longmont, both in Colorado. I hear rumors of at least one more in the general area, but have no information about it.
I am one of the mentors at the Boulder one. The afternoon students have finished the anti-servo tabs and the vertical stabilizer, and as soon as we can replace a lost part, the rudder can be finished. They are working on the stabilator and about to start the tailcone. They have two teams in the afternoon and another, working on the wings, in the morning. They have completed the front spars and are working on the rear spar and stub spars.
When I left the Longmont group, they had the wings nearly done and the tail and tailcone complete.
Dave