There are places in the world where psionics can be taught or enhanced. No matter where you go, the way things can be taught are the same. The only details that will vary will be what sort of payment is required, and what specific powers are known.
In general, a psionic master can teach or enhance a skill that they could learn with CIPs, but at a 20% reduced cost. If the student wishes to increase their psionic strength, they must spend 8 CIPs to add 5 points (no fractional increases are possible).
All schools can teach all of the powers from the Player's Handbook; some may know others.
All schools can also psionically manipulate the student's brain to do the following:
1. For the cost of buying a new ability, the teacher can remove an existing ability, leaving an unused 'slot'.