Complex sentence: In 2003 the first DPS Online High School class had 6 students, Jeanne Ross (Principal) but no other teachers, and an office at CEC; educational services were provided by Colorado Online Learning--another online school that Ross had helped start.
Split into simpler sentences: In 2003 the first DPS Online High School class had 6 students, a Principal (Jeanne Ross) and no teachers. The main office was located at CEC with the already established Distance Learning Department.Educational services were provided by Colorado Online Learning--another online school that Ross had helped start.