More to the point...how much do you *trust* your JH principal?
I once had to deal with a JH principal who was against anything he determined was anti-football...including NP/NP (TEA did an investigation, and discovered that this guy had been doctoring grades for years...another story for another time).
He decided to do an elective rotation in the 6th grade like you suggested. What it really was was a way for the kids to find out which elective was the "easiest", and an "easy" 100. Guess whose numbers started dropping?
I would not endorse a rotation scheme.