Help!!!!

DEFINITELY High School of the Dead!

It's exciting, and extremely thrilling. It will keep you on the edge of your seat!

It's a short anime (I watched it all in one day) So You'll finish before school!

If you don't exactly like the Ecchi or Gore Genre then I recommend you don't even try watching this.

But overall, it's an awesome anime ~ :)

Highschool of the Dead

only HOTD and D-Grey Man has their anime finished so either of those unless you want to continue watching them during school

I hear alot a good things about Sword Art Online i dont know how many episodes it has. HOTD is good (altho the T&A gets kinda old) only 12eps so you can watch that pretty quick

out of the ones you mentioned that ive seen, blood+ would be my favorite. so id say you should watch that.

its not all that long so you should probably be able to finish it before school (depending on how much time you have left).

Fullmetal Alchemist, durr.

Prince of Tennis amd Gintama are good. Prince of Tennis is a good one to watch before school in my opinion, not to mention it has cute guys. And D-Grayman also good.

Blood + definatly!!

The only one I might consider out of this list would be D. Gray-man. I never watched that many episodes, but Lavi always looked like an interesting character. OH, if only I could force myself to watch more anime instead of talking about how much I love it on Fanpop. That would be so awesome. ;_;

if you consider the number of episodes, i recommend High School of the Dead.. it only has 12 episodes.. i haven't watch it myself because it has ecchi scenes and i kinda dislike ecchi..

Blood + has 50 episodes, D.Gray-Man has 100 plus episodes, Gintama has 200 something episodes, and as for Prince of Tennis, idk but i think it has a lot of episodes too..

Sword Art Online haa 5 episodes as of now since it just started last July 7 but they said it will only have 13 episodes.. not sure though. i've been following this one and so far, it's the best Summer 2012 anime ever been released.