Complex sentence: The program was mainly used by home school students and disabled students as an alternative to attending traditional schools, and included those with disabilities preventing them from attending a mainstream school on a regular basis, and students with certain types of school phobias.
Split into simpler sentences: The program was mainly used by home school students and disable students as an alternative to attending traditional schools. Their students include those with disabilities that keep them from attending a regular school on a regular basis and/or students with certain types of school phobias.