Technically, you cannot have weapons at school. However, you can turn virtually anything into a makeshift weapon. You could use scissors, saws, kitchen knives, or even a gulf club.
Any weapon you might want to use in a fight to defend yourself with. Countries that have them, even call their atomic bombs 'defense weapons'.
They use it to defend them self
You can not use the constitution to defend yourself in any way, shape, or form. Ridiculous right?
They made the weapons that they had. Of course they knew how to use them!!!!
nuclear weapons
If by your weapons, you mean ours (earths) weapons, then i only believe nuclear missiles are strong enough to defend us, although it would create havoc it would still be able to defend us long enough. Bullets and tank shots are no use at all. So yes, Earths weapons are strong enough to defend an alien attack.
I would say catapults also cannons
To kill animals or defend their tribe.
To hunt and defend against attackers. Later in war against the "Whites"
Yes, you have the legal right to defend yourself in a threatening situation if you believe your safety is at risk and you use reasonable force to protect yourself.
Kenpo allows the use of weapons along with the regular karate strikes. It has some deadly strikes which have the intensity of breaking bones of weak body parts. However a Kenpo school does not teach its students to attack others. It focuses to defend yourself with effective but minimum harm to the opponent.
Different types of Eldar use different weapons - buy the codex and find out which ones are which for yourself, like the rest of us do.