Ooooh, Holy Grail War!
It's actually simple. I may be wrong in the following, but I'll try to explain it to the best of my years-old knowledge.
The holy grails is one of...five?... hallowed items. It can grant any wish. However, due to equivalency, something must be given in return for the wish. This takes the form of a grand competition known as the holy grail war. Each war that happens, masters - humans with enough vital energy to create summoning spells - summon the spirits of heroes in the past. These heroes are generally in nice, luxurious realms fit for the heroes to reward them in the afterlife, or something. When they get summoned, the holy grail gives them material form. These heroes become the servants to their masters. They then go to kill one another. At the end, the servants lose all memory of the grail war. However, the winning master and servant each get a wish. Normally, the participating masters want access to this giant fountain of infinite knowledge - I think it's the Akasha, though it might be something else. If anyone gets there, everyone forgets they existed, I believe, and they can't ever leave the Akasha once they go there.
Cool stuff.
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College is a scam. You go there to learn, not to be thrown at exams. The professors tend to make you read textbooks on your own and don't teach you themselves. You then graduate only to find that your degree isn't worth anything anymore.
Plus, I'm a proponent of the "Knowledge Is Free" concept, so I hate the fact that you have to pay for college. Or if you get a scholarship that pays for everything and you drop your grades enough, you're then forced to pay the entire amount back to the scholarship. And yet you're paying for teachers that don't teach, for a degree that means nothing, and think yourself smart just because you aced a few tests, only for Dr. Cox to put you in your place once you get out.