An argumentative essay is where you have a claim, evidence, and reasoning. First you make a claim to let the audience know how you feel about a particular topic. Then you back it up with evidence. Finally you give your reasoning; why you feel this way, and why you want to argue for it, or against it. I think school uniforms would be a good topic because it's so debatable. Teen driving would be another good one; there are many statistics to back your claim up with that. Writing an argumentative essay is fairly easy, as long as you know what you're talking about.
Imagine a world where there are no rules; you could do anything to anyone...but would you? Rules and laws are in place for a reason, and usually people believe in that reason. Just because it wouldn't be illegal to hurt someone, would you still do it? I hope not; I do see kids at schools getting into fights and disrespecting teachers, however. The biggest problem I see happening is that criminals that should be imprisoned, will run loose, and that would be very scary. Besides that I hope that most people will do what is right, just because they have good morals.