How long is the average study time? I plan on reading, studying, and doing all the practice tests, Kaplan, Achiever, Destroyer during the month of August and September and take the DAT on like September 23rd.
That's actually exactly what I did (unintentionally). I originally planned to study from June to August, and take the DATs late August while doing research in school. But I was unlucky with my timing, since my PI pushed for my research project to be submitted for publication by the first week of August. I ended up not starting to study until the 2nd week of August, and I took my DATs mid September.
I didn't use anything aside from Kaplan to study for the DAT. I decided not to take the Kaplan course and bought the Kaplan online package instead. The Kaplan online package comes with the Kaplan book and 3 month access to their online lectures, workships, practice problems, and Mock DATs. I scored a 21AA/22TS/20PAT.
I wouldn't recommend only studying for such a short amount of time. But, if you ever end up in this kind of situation... here's what I did:
I had around 6 weeks to study. I divided up each section of the DAT text book in two halfs. I would dedicate 2 days to completing half of a section. For example, if I was studying for the Bio section, I would spend those two days reading half of the bio section of the Kaplan DAT book and completing the relevant practice problems. Then, instead of spending the next two days to complete the other half of bio, I would move on to completing half of another section, like Ochem. I rotated through all the subjects at least once first, and then came back to finish the other halves. I think the Kaplan package came with around 7 practice DATs, so I took one for each weekend, and took w/e was extra on the last weekend before my exam date.
Lastly, somethings that I wish someone would have told me beforehand: I haven't used any other study material, so I can only speak about how I felt about Kaplan. Personally, I thought that the bio section of Kaplan put too much emphasis on plant biology. I don't remember seeing any plant biology questions on my test. I felt like I wasted a lot of time trying to look over the plant stuff. The Kaplan book was generally pretty useful. You won't get a "perfect" score by just looking at the Kaplan book, but I think it will at least help you get a decent score.
Hope this helps!