I never actually had scoliosis screening done at my school, because i had already had fusion at that point (seventh grade). however, i found from friends that you bend over and they look at your back (i imagine to look for a rib hump) and make an analysis. if they believe someone may have it, they contact their parents. the tests aren't very accurate because they thought one of my friends had scoliosis and she didn't, and by the time i would have been tested in school, i probably would have died.
my scoliosis was 'discovered' by my doctor during a physical when i was eight-ish, and by that point it was already pretty far along, but i don't remember the exact curves.
Boston Brace for 2 years
Spinal Fusion July 25, 2002
Post-Op Brace for 6 months