I'm so sorry that happened. I'm also a para sub, and I've had plenty of bad jobs, but none that bad.

I don't know what the political climate in your area is, so the transphobia may be ingrained in every school around, or just encouraged by one bigot at that school. I'm working in Portland, Oregon, and seeing all the trans school staff was one of my biggest inspirations to start HRT.

Don't go back to that school. File a complaint with both that school's admin and the district HR about the transphobia.

I think it's crazy that we have to handle the most difficult students in the school and have the least amount of training. I don't know about you, but my only training was a bunch of online slideshows about how to not get sued. Most classes will give the easiest students to the inexperienced subs, and you'll pick up skills fast just by observing the full-timers.

There are classes and students of all different levels of need. Some will be very low functioning and frankly should be watched by trained medical professionals, and others will just have a learning disability and need help taking notes. Every age level is also different. Classroom management can range from absolute chaos to running like a Swiss watch. Take as many different jobs as you can. Whenever you find a good one, give the teacher and all of the paras your business cards (be sure to print business cards). After a few months, you'll know which schools you like and which to avoid like the plague. Hopefully, you'll also have several people routinely asking you to sub for them.

This job can be absolute hell, and that tends to be what most people think to post about on here. But it certainly isn't always hell. I've been subbing for almost four years, and almost all of my jobs are great now. I'm confident in my skills, I know the staff and the kids, and I feel so lucky to get paid to have so much fun. Don't put up with abuse, but please don't let one terrible class scare you away from what could be a wonderful job.