Put shortly, I loathe my physical education teacher and would be happy to see him fired.
Every day, he rubs the girl’s arms, legs, and occasionally picks them up in his arm and carries them, or drags them by the leg across the gym for ‘fun’.
Would this be considered inappropriate? If one of these girls did decide to step forward, could she take legal action, provided they have solid proof (eg. photo/video proof or several witnesses)?
Thanks again.
LemonVibe 
You and those girls need to talk to your parents and have them advocate for you. Repercussions can come on you for having a cell phone in class.
Yes it’s inappropriate. Tell your parents and get their support.