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Some schools may also require you to take one or more GRE Subject Tests. The purpose of each GRE examination, of course, is to help graduate schools decide if you've got the right stuff for their program. If you're looking for help with the exam, check out Peterson's full-length GRE practice test.
Given the state of higher education today, students cannot afford to attend grad school to figure things out or just for the love of learning (Ironically, I did it for just that reason), and hope for fate to favor them. Students should approach grad school as a time to develop concrete professional skills. Since grad programs focus primarily on developing specialized knowledge, advanced critical thinking, and innovative research, grad students cannot rely solely on their programs to develop more basic skills.