Looks legit
Dear Teacher, my daughter is sick and cannot go to school because she needs to visit the doctor because she has a toothache and won’t go to school for ten weeks. Sincerely, mom. These are the kind of letters teachers live for. There’s nothing better than catching a student lying between their teeth.
The weird thing about pulling off stunts like this is that you can get suspended, which is basically what the student’s goal was. Don’t come to class because you pretended to be sick to get out of coming to class. It’s a win-win for everyone, except the student’s transcript.