In most high schools in the Philippines, a basic military course called the CAT (citizen army training or citizen advancement training) is implemented covering high school juniors and seniors. These pics are from a recent CAT graduation.
Fundamentally, the course is meant to promote patriotism as well as bravery and being orderly.
For a related video to watch, go to http://www.youtube.com/watch?v=r1Cz2BDl_Tg