The problem with alot of forex trading class is that the trainers do not actually trade for a living and seem to be more interested in getting money from the students then providing a decent forex training.
If you have decent results and have the ability to teach you system, I am sure that you will find people that will pay for your services.
But statements like turning $2000 into a million in 3 months just make you look dodgy.
If you are that good then you should consider selling your signals as there is plenty of people that are interested in profitable signals.
Take a look at the following webpages.
1. Is a list of good schools. So you can get an ideal of what you should be providing if you want to teach forex.
2. This is a list of signal providers where you can sell your services.