Should I do this program?

I am a 13-yr old 8th grader with really bad anger problems and my school psychologist wants me to join an anger management program during school hours 3 days a week that she's doing with someone from mental health, and It would mean on my current schedule I'd miss one of my core cles 3 days a week that I already have trouble in. We are trying for a schedule change, but that means I would probably be taken out of algebra and it's the only advanced cl we have. I would also probably be taken off of yearbook and if I were to miss a core cl I probably wouldn't be able to stay on CJSF (California Junior Scholarship Federation) which I would need to be on to have even a glimmer of a chance to get into med school. Help me!