How difficult are the GREs? I have a graduate degree and I'm studying to go back to get my EdD. The school im applying too takes into consideration all the the other stuff- recommendation letters, personal statement, grad school grades, etc BEFORE they look at the GRE scores.

I haven studied this type of math in 15 years and although I'm working through the prep books and my online class but it's pretty overwhelming. I'm wondering if it's even worth worrying about the studying. I mean, I can only do what I can, right?? I didn't need to take them for my grad program, so I'm not sure what tie expect.