It is a new service for families who are worried about large classes. However, it is a service that I used to do before, so it is back. 
There is something we want to ask you is to organize a group and space. Please don't worry about an age or experience restriction. We will try our best to fit in your schedule.
The fee is $100/1 hour per group. It is ideal for 2~5 students. 
We can arrange invoices for groups or individuals.