Class sizes and staffing ratios (including teachers and paraprofessionals) in self-contained special education classes are determined by the needs of the students as reflected in their IEPs. The ratios are based on state regulations and NYC Department of Education policy. They may be as low as six students to one teacher and one paraprofessional for those with very high needs to 12 or 15 students in elementary/middle and high school respectively with one teacher. Speak to your UFT chapter leader or UFT borough office if you have a question about the size of your class.