Our group doesn't tape during the regular high school season that I am aware of. That being said, our group DOES tape during our "spring training" sessions at a local spring high school league.
Our group holds two-person (for newer officials) and three-person (for experienced officials looking to get more three-person mechanic) practice every spring. The group tapes these sessions while we officiate games (we usually do two games in these sessions) and then the observers discuss with us what they saw and look at some things on tape.
The upside is you get to see yourself on tape. The downside is that the games are usually not as intense as a typical regular season high school game so you're not challenged by certain things that might occur in a high level game. Personally, seeing myself on tape is good. You don't realize certain habits you have until you see it.
