elementary school.. first through sixth grades (starting at age four or five)
high school.. seventh through twelfth.
using this system, how mature do you think a person would be at age sixteen when graduating?
how would this system help the workforce?
how would this affect college?
general pros? cons?
..consider that the age of menstruation has dropped two years since the early 1900s.
..consider that many things that used to be for adults only are now accessible to teens.
edit: consider most european school systems that work more like this idea than the current system.