Classes with Jade are worth it in several ways, you can improve your English from every level to proficiency in it in a short time or depending on your dedication. My experience with Jade is going very well, I started without any confidence in myself while speaking and in a few classes that changed, she explains where I am failing and encourages me to speak more and better making it easy with grammar schemas.
On the other hand, the preparation classes for the IELTS test are my favorite because of the work and tests that we do during the class in a group, and after it, she follows up on her students in an individual way, which really helps to improve.