Physical education class, a senior one girl, has a severe sprained ankle and the pain is unbearable. She can take off her shoes and socks, but is she afraid that others will see the joke?

This situation is ok. I am also a high school girl. My best friend is in the same situation as you, and also went to physical education class. She couldn't walk because of a sprained ankle, so we girls helped her sit next to her. Help her take off her shoes and socks (of course my best friend asked us to help her take off her shoes and socks). So I don't think you need to worry about being seen by others when you take off your shoes and socks. It doesn't matter if someone really sees it. They may give you some help, such as helping you go to the infirmary. Of course, it is not excluded that some naughty students may laugh at you and say you behind your back, but most of them are good. Just like my best friend's classmate knew that she was injured, she immediately helped my best friend to the infirmary with us girls and let the school doctor do a simple treatment.