I work in a Yeshiva where we have therapist coming in and working with those children who need it (SP, OT, PT, Counseling). The students are taken out of class to get their mandated services.
Now, sometimes, a teacher will ask a therapist to take a student at a different time due to an important lesson being taught or a test being given.
However, there a some students that miss many days of school for doctor appointments. We understand that kids need to see a doctor once in a while. A child is not feeling well, we recommend that he go to his doctor.
But what about that child who misses one day a week, two days a week for doctor appointments? It is very hard on a Rebbe and teacher to teach a full lesson when you have students who need to catch up every other day!