This is surprisingly to see the negative response for which I've put my 2 kids in this learning center.
My older son has been put on the waiting list 6 years ago then after the assessment test, he could be able to place in the class which is one grade above his academic year. For the 6 years study, he has participated in the various public exams like Trinity, Cambridge and got an excellent result. Also the teacher will suggest jumping to next level of grade when the tutor sees the potential.
My younger son has started this year and I feel satisfied with his improvement.
Money is an issue but whether is worth for value is another matter.