School Injury Legal Rights

On Dec 4th I went to school and I got injured In my 4th period dance class. I fell trying to sit down and I hurt my hip really bad. I told the college student TA what had happened and he told me I was fine and to continue putting on my shoes and going on stage to practice for the performances for Dec 7th and 8th. As I listened and practiced the dances, I was in so much pain I could barely even do the dances and remember the dances either. After class when we finished practicing * or more times I told my regular teacher that I was in pain and explained to her how I injured myself and then told her I needed to go to the nurse. She said I was fine. I went to my next class in so much pain and asked to go to the nurse. She said yes and gave me a pass and I had to walk all the way to the nurse. That same day I was in the hospital and discharged with a muscle damage and bruising on my left hip. I am currently doing independent learning with three weeks of excused school days from my pediatrician. My 4th period dance teacher lied about offering me an ice pack when she told me I would be fine. As of now she is making me to make up work for the excused days from my pediatrician. She says I still need to make up work from the days of absence. Why should I be doing makeup work for the days I'm absent for if they're excused because of my injury.

Apple Valley, CA

Thank you