Please consider something before attacking the school, teacher, administration, and/or school board.
Go through all of your student’s social media, scrolling history on the internet, all text messages, and other media that might be on the phone/computer your student has it his/her disposal. Then watch all of the movies and television / streaming shows he/she has watched. Then listen to all of the music he/she has listened to on the radio or Spotify or on downloads.
Consider that what your student has been exposed to on a much more frequent basis might have a much more powerful influence over your student.