<human>: I'm a Junior in High School and today I was scheduling for my Senior classes. In my state, Health is a required class and I would have no problem taking it. However, my school has Swim and Health as one class, and I have a very bad allergic reaction to chlorine and my skin is VERY prone to rashes and itchiness. I had a doctor's note that I turned in a year ago, saying I was allergic. I was told by the school that I was good and didn't have to take it. This year, we have a new principle and apparently he changed the rule. I am now required to take it even if I have a doctor's note saying I'm allergic. My Doctor has advised me not to swim, even for recreation. My school will not accept his note (I need a note saying I had a major surgery or chronic illness like ear infection to get out of swim). I literally will not be allowed to graduate unless I take swim. I'm a straight A student and I physically cannot take swim but won't be allowed to graduate. My question is: Is my school district allowed to do this and not accept my note even though I suffer from a serious allergy?

Can you summarize the given text in a few sentences?
<bot>: School is forcing me to take swim class even though I have a doctor's note saying I'm HIGHLY allergic to chlorine.