Summer Comp Sci Program for Rising Senior

Hi, thought I'd ask the group since nothing quite addresses this in the archives. This summer, my rising high school senior would love to find a computer science/game design program that isn't too basic - they will have just finished AP Comp Sci A. It looks like the ATDP options in the CS field are pretty introductory plus the age range is 7th to 11th grade; you can imagine how a 16 year old feels about taking a class with 12 year olds. They might also be interested in being a CIT or similar for a lower level coding camp (if there were same-age peers doing it too, and people to speak with about their personal game design passion projects.) Willing to drive or help them navigate transit to get to most of the Bay Area. Definitely not interested in online stuff. Thanks for any ideas to explore.