Interesting! My high school had a Gay/Straight Alliance when I arrived as a 9th-grader in 1994, and I immediately joined. It mostly involved sitting on couches and having low-key friendly student conversation facilitated by teachers. (That's what I recall, anyway.) A couple teachers were openly gay, so they tended to show up. I think the GSA was still called Gay/Straight when I graduated in 1998. When a Q appeared, it meant "Questioning." I don't remember taking any survey about bullying or health.

My high school also had a separate group that was only for queer kids. There were like five of us in that smaller group. It was "secret" in the sense that the teachers wanted to protect the identities of those of us in the Definitely Gay group, and as participants we were obligated to keep it confidential. It didn't even have a name, it was just "group," i.e., lunch hour in the health teacher's office. I think "how will other gay students know that this group exists?" was a real question. The group existed for those of us who had the imagination and the outness to ask the health teacher if there was something like it.