Been to the St. Mary's camp the past couple of years. It's a nice camp with a lot of veteran college/HS officials to critique you.
I don't know what your officiating experience is, but as I was relatively new, the level of games and the fact that the camp was to learn COLLEGE women's three person mechanics, were a BIG shock to me, especially my first year. I was a little...OVERWHELEMED....to say the least.
However, the camp experience helped "sear" the 3 person mechanics in my head very well. So well, that even though I hardly work three person games during my regular season, it didn't take me long to re-adjust when I had a few playoff games on my schedule this year.
I heard the Chico camp was good too and that people are out at Chico looking for college (JC I think) officials. Some of our local officials were brought on due to their performance in Chico.
Good luck!