The Unique Selling Point of the air cadet organisation is (or used to be) that it offers youngsters the opportunity to learn to fly gliders at their local gliding site.
This used to be so true that, in my long gone days instructing with 622, they introduced the course to enable younger cadets to do 30 launches when they were too young to solo. I was told that this was to help retain the cadets. If it was true then it is surely still true.