Tuition is a broad based term that means teaching in various grammatical contexts. A tutor provides teaching and/or coaching services either in general learning, or a specific subject. Tuition may include remedial learning, special needs learning, and other types of services, Tuition may be provided either by private specialist tutors working for themselves, or by agencies. In some cases tutors may conduct classes, or may work in the home of the client. Tuition is a common sideline business for teachers to supplement income or provide alternative sources of income between jobs.