Here's my take on what happened: The female student pulled a Fight Club and hit herself. https://www.youtube.com/watch?v=6pJC0FLA3Sk&ab_channel=Movieclips It would be tough to prove this without great forensic evidence. However, sometimes, forensic specialists can find out if the student truly hit herself. She may not be intelligent enough to have hidden all of her trails. If she told ANYONE, sent a message to anyone, at all, where she admitted to hitting herself to frame the teacher, she's fucked. Digital Forensic specialists can usually recover this data even if she deleted it. The police will need a warrant. So if this kid made this shit up, she's likely fucked. It is highly likely she is not aware of all the ways she needs to cover her tracks to pull this off. It would take weeks of planning for a pro to pull this off much less a high school (junior high?) student. If nothing comes out in the case, and the teacher really did beat this kid, this teacher should not be allowed around children ever again.