How do u Study with IC

[MelissaRosenblum]

I am currently studying for my second CLEP (Macro Economics) with IC. I was just wondering how others used the website because it seems that i am taking a much longer than everyone else to prepare for exams. I current study one set of questions till i get a 90% or higher than move on to the next set of questions. I study between about 15 hours a week. It will probably take me 2-3 weeks to prepare (already got 1 week down) just see how long it takes me to get through the rest of the material.

I just seems people here are able to test in 1 week. Whats the secret different study method or perhaps i'm not spending enough time studying.