Instructors included in this list have been certified through USHPA's instructor training program, and must meet recertification requirements every 3 years.
Schools certified by the Professional Air Sports Association (PASA) are a collection of USHPA-certified instructors that have met additional safety requirements and hold supplementary insurance.
Look through both lists to find the school or individual instructor that's the best match for you. You might also want to take a look at our article, "How to choose an instructor."