can't say anything about school groups, but the last time we were there, in July, there was a very large and very loud church youth group. They were placed in rooms very close to ours. They filled the buses quickly and ran around at night. I think the chaperones were worse, yelling at the kids to keep it down. Yelling, yelling, yelling. Then next morning, we had our room changed. The view was not nearly as nice, but it was much more quiet.
If you have a problem, just call down and have your room changed.