In a different tone to the two elders above, and in line with my nick, I'm gonna actually answer your question!
First of all I totally agree with Plavt - you will get much more processing power (both CPU and GPU) out of a desktop - for gaming! For school work, anything good enough for gaming is already 'overspec-ed' for that purpose. Powerful GPU/CPU will always emit a lot of heat - and to pack it in such a small form as laptop is always going to cost you. Having said that you said you will mainly play Maplestory which doesn't require much power in GPU/CPU anyway, so it's fair deal...
In balance though, you may want to have a non IGP laptop - a modular display card in your laptop. Now, as have been discussed aplenty, usually Dell wins on value, and with your budget you should take a look at XPS line - for example M1530. Tweak the spec here and there, and I'd recommend that instead of max-ing the spec to the full 2000 of your budget do spare extra to purchase a longer and better protection/warranty (as I would always suggest to anyone buying a laptop).