If we are taking tuition for students, then taking mass tuition is economical. Otherwise if we go for induvidual tuition, then its not economical for the teacher.
Otherwise we should collect huge amount as fee from the student. But students wont attend tuition if we ask for more fees.
So while you stat taking class, collect as much as pupils you can. Othewise it wont be worth for the efforts you spend for taking the class.