Schools are open in most areas though attendance is limited and many do not show up on the days that they are assigned. It's the same in my college class. Since going hybrid, my professor has never had more than 4 students show up in the classroom. She is usually instructing an empty classroom via a bad camera and microphone set-up. We're a class of 25 students however, students choose not to go to class on the day assigned but to attend on ZOOM instead. When the campus was closed, the professor taught from her home and the sound and video quality was so much better! The kids don't seem to want to be there; whether they are afraid of COVID or just don't want to roll out of bed, get dressed and be in a physical classroom by 10 AM, I don't know.
I do understand your sorrow over your child missing out on her senior year; on homecoming, prom, sports and all those "plus" things. I felt for our granddaughter too. Our children will have stories to tell their children about the year/s when. Just like my parents told me and I had stories to tell my daughter about how "hard I had it."
When I was a teen and whined about what I couldn't do or she wouldn't let me do, my mother would finally just stop, turn and give me that look and say or sing, "Nobody ever promised you a rose garden."( I know, it's "I never promised you a rose garden.") I swore then that I would never be like my mother but over the years I have found her words just keep coming out of my mouth anyway and that song keeps popping into my mind. Nothing in life is guaranteed and that's a lesson well learned this past year.