Gap Year: take a break from schooling, and enjoy travel, paid work, training or volunteer work. Consider these well-know options:
Outward Bound is a popular program (it costs $)
Would you like to train for a specific, well-paid job? Try JobCorps.
Attend a Gap Year Fair & get loads of advice here and here.
How about City Year, associated with Americorps? Student Conservation Association?
CIEE, headquartered in Portland ME offers lots of world wide opportunities https://www.ciee.org/aboutCITY Term NYCCity Year Dynamy (for internships) Earth Watch Volunteer for Peace