The lesson is given one on one with the teacher and all the attention is focused on the student.
Group Class
Two or more students are having the class together and the price of the class is lower and the students work on different activities simultaneously.
In Home Class
The teacher goes to the residence of the student to give the class there, the price is a little higher.
Trial Class
The teacher will give some lessons on a trial basis and the student doesn't have to enroll after them, it's only for the potential student to try if they are interested.