V expensive $$$ that had to pay a lump sum in advance, and the teacher was not good who could not give us advice how to improve but just to point out the weakness... eventually no offer...
it really depends if you are lucky enough to have some experience teachers to teach your kids. If not, it's just a waste of money. Since this center is quite famous nowadays, it offers lots of classes. And they have to hire lots of teachers who may be inexperience.