There are lots of training programs to choose from and finding one that is right for you may be very confusing.  You will be spending a lot of money and time taking your training so make sure you find the best school for you.  Credibility and reputation are important factors in selecting an Instructor Training program.  Additionally, the program you choose should be recognized by the Pilates Method Alliance.  While not every studio will require that you be PMA certified, you will most likely have an advantage when looking for work.  Visit the training studio and talk with the instructors who will be teaching the course and see how you fell about them.  Trust your instincts.