I have to agree with the wise advice Thanee and tenkar have given here. If this is going to be primarily for schooling then you want a larger laptop. 14" to 15" should be plenty. And unless you have a boat load of cash, gaming isn't really a main stay of laptops. You have to shell out some serious $ for a gaming laptop.
1. As tenkar so rightly points out you need a system that has a DVD drive that can also burn. Many just burn CDs and play DVDs but that should suffice.
I can't begin to stress the importance of a DVD/CD drive. I belong to the TechSpot.com forums where we help people with all kinds of issues including the Blue Screens of Death.
So many people come there whose system doesn't have this drive and thus cannot run some critical dianostics nor can they use their disks for repairs, etc.
2. Make sure your system has at least two gigs of RAM especially with Vista. Vista loves RAM.
3. Also, make sure you get an extended warrenty for 2-3 years because if you ever drop it and break the screen a replacement costs about the same as a new laptop.
4. Stay away from Intel's Pentium Dual Core systems because they run HOT. However, Intel's Dual Core 2 is excellent. AMD dual core cpus are also excellent. I have laptops with both Intel and AMD.
5. You'll want a number of USB ports for printers, wireless mouse, flash drives, etc.
* I suggest joining the TechSpot.com forums and ask for advice over there (no, I am not compensated for this suggestion

) under their Mobile forums. Many people who lend advice are full time IT's who lend their expertise and some of them build and repair laptops. They can tell you what brands are good and which ones to stay away from. If you do decide to ask over there make sure you give the following two pieces of information:
a. Your budget.
b. What you want this laptop to do from primary purpose to secondary purposes.