that depends upon what you mean by school accommodations.

in elementary school and high school american disabilities act accommodations ....in general... are things like the handicapped student can have an aid in the classroom to help them with things like dropped items, reading the material to the student, sign language interpreters. recording devices and in mental health problems have sessions with the school psychologist at a schedule the psychologist thinks the person may need, and access to remedial classroom or adjusted classwork after placement testing in subjects are done. these are all things that can be planned for. for the unplanned things like panic attacks anxiety, triggers usually schools are already set up in a way that if the student has a problem like this they get sent to the school nurses office who either has the student meet with the school psychologist, lay down in the nurses office or parent is called and the student it taken home.

because of the was DID works usually a student doesnt need special accommodations for things like alternate personality switching. in general DID is a mental disorder that happens in children below the age of 5 (in my location) due to extreme trauma. as a result the child has been switching personalities since before they even entered school. its basically their normal. my point is usually students don't walk up to their teachers and say I cant do my math because I just changed from being amanda to being rainy or I need to be excused from gym class because Im not amanda, Im rainy now. usually what happens with DID in my location when a school age child has DID the alter that takes care of the triggering subject takes control and does that. for example if I could not calculate my fractions, this would trigger me to where I would dissociate and then my alter who's sense of agency was to do math took control, completed the work and when the paper was graded it was scored 100.

college is a bit different. here in america we have privacy laws that means the college and teachers can not ask about your mental or physical health problems and unless a doctor says differently they must treat you just like any other student in the room. just like any other students in the room you have the choice of whether you attend classes or not and if you miss any of the material or tests just like any other student its up to you to reach out to fellow students and get the notes and material. just like any other students in the class colleges have counselors that are available, you just walk in to their student aid department and schedule your appointment for when you want to see a counselor. college professors at the beginning of the semester hands out the class syllabus that tells when class meets and what each class time is going to be on, when the testing schedule is. its up to you to bring recording devices or check with the student aid office for the equipment needed. in situations like a student cant climb stairs sometimes the college will move the class to a 1st level classroom. in other words you are pretty much treated like anyone else and if you have special needs to make sure your needs are met. sometimes depending on what accommodations you are asking for the college can help you and other times its up to you to make sure you bring what you need to be able to participate in the classroom.

in my college classes there was no need for accommodations. like anyone else sometimes I went to class sometimes I didnt, when I didnt attend class I called a fellow classmate and borrowed their notes. if I missed a test. I went to the professor and said is it possible to take a make up test? in other words I was treated just like any other student and free to come and go just like normal students.