Is there anything to do

I graduated high school as class of 2020. When I was a junior there was something going around about a teacher being inappropriate to a student showing her photos of him, taking her stuff, cussing at her and that he ended up getting fired. On his Instagram it showed him still teaching at a school where it was all boys. A few people told me when you look up his name/social media an article came up about him that was similar to what the student had said and that there photos of him with his shirt off that were similar to the ones on his Instagram. There was also a few kids saying that they were getting added by him on Snapchat and he would message them things. I also noticed things about him yet he still somehow has kids from the high school following him and people starting calling the girl who reported him a liar and even some people I know personally started going along with it. I know because this was years ago a few amount of people are going to say something like “whatever than who cares” or “why is this a problem” or some other dumb shit.