If what you are looking for is to learn quickly, we recommend that you try classes of 3 students. Online English classes by individual videoconference for specific things are fine, but if what you want is to learn quickly, it is better to share learning with 2 other people as long as they are complementary. At Oxinity we measure the results of the students obtained in each class in real time, and we can affirm that homogeneous classes of 3 students have better results than individual classes as opposed to what many people believe. The problem of learning is the preparation of the classes. A private teacher, most of the time, does not have enough time to be able to prepare his classes and personalize them to the needs of his students. Needs that in most cases, a single person, without an artificial intelligence base, is unable to control.