A teenage boy dances around in the background while another teenage boy wearing practices high jump in a school cafeteria.  A teenage boy completes a high jump landing on his back on the mat.  Several adults and teenagers are standing and sitting around the high jump mat while a boy in black does the high jump.  The boy in black does another high jump while another teenage boy watches in the background.  The same boy in black does a high jump while a taller boy in white walks past.  The same high jump is shown slowly to point out mistakes the boy is making.  A different boy wearing white does the high jump while other people stand and sit nearby.  The high jump from the boy wearing white is replayed to point out mistakes.  A third boy wearing blue does the high jump three times in a row with others in the background.  A replay of the boy in blue is played to point out mistakes he is making.