The Legion Academy is a training school for members of the Legion of Super-heroes. It was created by Jim Shooter and Curt Swan,and has been re-used and revisited by subsequent creators in the many evolving iterations of the Legion that have been published over the decades.
The Academy is both a source of supporting characters and subplots for the ongoing Legion titles All of which have an established history of searches, competitions and understudies meant to expand the roster. The Academy training has also groomed several characters for eventual Legion membership. Chemical King, Dawnstar, Karate Kid II, Magnetic Kid II, Tellus and Timber Wolf are all graduates of the Academy. Training there may be deficient to some degree, however, as Chemical King, Karate Kid II and Magnetic Kid II have all died in the line of battle. Although as two of those were selfless sacrifices made to save others, they clearly teach heroism quite well.
Bouncing Boy and Duo Damsel really found their niche when they became instructors at the Legion Academy, demonstrating to new heroes how teamwork, quick-thinking, and courage could make great heroes out of the weakest powers.
When increasing hostility from Earthgov and a lack of funding led to the closure of the Legion Academy, Bouncing Boy and Duo Damsel were tapped by one of the United Planets greatest generals, King Jonn of Pasnic, to become Co-Instructor Generals of the newly-opened United Planets Militia Academy on Xolnar. Along with many of their former Legion Academy students, they began training meta-powered beings to become soldiers and special operatives (militia, ground forces, as opposed to operating within the UP Starfleet where there powers would be wasted), helping to stiffen the UP’s resistance to invasion by the Khund Empire.