Mom, you are exactly right. I had never heard of it until I got this random postcard in the mail last year and inquired, but I am sure that the teachers running the program could make or break it. Therefore, I would want to ask some questions before signing up.
I just got very lucky with the team we put together. The staff is paid, but not nearly what they would make in a summer school position, so the teachers have to WANT to be there or they just need money and can't find anything else. I just happened to get the teacher that I first approached and our superintendent made a recommendation when he gave me the go ahead. I had worked with him in my GT days, but hadn't been in the same building for years so I was hesitant. Supt. recommends though, so I at least offered.
This teacher just turned 75, but the curriculum had him as excited as the kids. It was amazing. He told me this year that he wasn't returning because he is celebrating his 50th anniversary that week. By the time I returned home the message on my answering machine was that he hoped I would still let him work. His wife said that she knew he loved this last year and they would travel later. THAT IS AN ENDORSEMENT in my opinion.
I had one teacher volunteer the first day and she came back everyday. She told our school board she would do it again in a heartbeat.

Also, if you don't find one near you and you know a teacher or director of a center with enthusiasm and a desire to seek new and neat things send them to the site. There is a section for bringing it to your school. Cool thing is......the school pays nothing except providing the space. Everyone is on contract with Camp Invention and ALL supplies are furnished. They even sent the trash bags!!!