The reason you study with a teacher is primarily for the empowerments, for someone who is enlightened to transfer power to you. What is most important is that the student uses that power intelligently and wisely.
In order to do an empowerment, a person obviously has to be highly empowered, have the power, and also have the structural knowledge of how to transfer it to someone else.
They can't stop you if, in your heart, you seek enlightenment, empowerment, balance and knowledge.
The later stages of the enlightenment process are trickier, and it is really essential to have a teacher then. You need correction, direction, and most of all you need a master's auric empowerment.