I think Florida is considering re-introducing corporal punishment.
A lot of older teachers say paddling works, and the few long-term studies on spanking (which are difficult to do because not very many people weren't spanked) show long-term benefits. Those were spanked occassionally for misbehavior (at least up to age 6) outperform those who weren't, and are happier and more succesful.
16 is pushing it though. By that age, teachers should be using more devious or drastic punishments to show the students that as they get older, adults are going to quit holding back. Down South the sweat box would be a good one, but pretty much anything used by the Spanish inquisition should work: flogging, thumb-screws, branding.
The latest trend sweeping the school systems is the use of mass starvation for behavior control. The new high-school food guidelines limit lunch to 850 kcalories a day, whereas active teens need 3,000 to 5,000 kcalories per day. Teachers are telling the students to bring more food from home to avoid weakness, lightheadedness, and other effects of starvation.