There are many types of professional tutoring services available in the United States nowadays. First of all, there are public tutoring services and private tutoring programs.
Public tutoring services take many forms. For example, a teacher can tutor his students after school or during lunch for free. Similarly, a schools often hire tutors to assist students. Teachers often host optional review sessions and study sessions. However, teachers’ time is often very limited. There are also laws and regulations that forbid teachers from tutoring their students outside of school.