I had that experience. I loved grade 9 gym so much. There were no boys! Still, it's taken me until university to start to like the idea of doing sports and being physically active. The few boys I've done sports with in uni were much more inclusive.

I was the tomboy girl who got the ball. In 3rd or 4th grade, I got so pissed off at them for not passing it to the other girls that I organized all of the girls against the boys. At a signal, I charged whichever boy had the ball and the other girls formed a line leading to the tallest jungle gym. We passed the ball down the line until the girl at the top of the jungle gym got it, then we attacked any boy who tried to get it back. It was the only ball our class had, so they couldn't play as long as we had it. Eventually they just stuck to throwing rocks at us. They passed it to us from then on.

This is painfully familiar. In 9th grade gym (we were still co-ed) we'd play 3-on-3 basketball. The teams would split up into the "competitive" league (boys) and the "just for fun" league (girls) and play one another. One day, three of us DARED to play with the boys teams are were subsequently teased, humiliated, and physically abused until we quit. By boys who were perfectly nice to me in all other situations, too.

I never looked at them the same again.

Surprisingly, I didn't have an experience like this at all. Whenever we played mixed games, the girls get equal time, if I remember correctly.

Oh, I got terrible grades in phys ed. I got my one and only C of my entire school career in gym class. And my teacher told me I had "deserved to fail, but [she] gave me a gift."

The worst ever was a creepy student teacher who came in while all the girls were weightlifting (while there was health or driver's ed in my school, the classes were sex-segregated. If not, we were co-ed). He came over to me and a friend and yelled, "I wanna hear some grunting, girls!" There was dead silence for about three minutes. AWKWARD.

This happened a lot in my gym classes too. Unfortunately, so did a lot of sexual harassment from the boys. As soon as we told the teacher, the problem was taken care of, luckily. I do remember one time in particular in which a boy touched my butt, and I turned around and punched him in the jaw. The teacher saw it, and admitted to seeing the entire thing (years later, when I ran into him again), but did nothing. I guess I'm kind of glad, considering I would have gotten suspended/expelled.

Oddly enough, my As in gym came when I had male gym instructors. The one and only time I got a "C" (and was also told that I couldn't wear a tank top that met school dress code because it "excited the boys") was when I had a woman gym teacher.

The guy gym teachers in my school were much more encouraging toward active participation, helped get to the route of why I didn't want to participate in some sports as much as others, why I felt more comfortable on defense than offense, and so on and so forth.

personally, our gym teachers didn't care too much if we participated in team games. My female teachers were always tougher on me. ( probably a good thing.) My male teacher was the one known to favor girls
"hello beautiful ladies" . If we didn't do much, he'd kinda assume we were just too delicate or on our periods. (too afraid to ask) So that was an easy year.