Do I just get lucky on some practice tests?

Test Preparation ACT Preparation
1

I have taken about 4 practice tests so far and I have come to a conclusion that my scores are all over the place. Is this because the reading material and the difficulty is different among practice tests? Or is it that I am just not consistent…?

The very first time in June, I scored a 28 (27.5) and the latest time in August, I scored a 32. In between those two practice tests I have been getting 28-31. What can I expect to get on the Sept ACT? Are the practice test scores close to the actual ACT score?

2

What tests did you use?
Did you time yourself?

3

@HereToHelpYou I used practice tests from the red official ACT book. And for all of the tests, I have kept track of time. Tomorrow, a week before the Sept ACT, I’ll take the 2014-2015 released practice test from ACT and see how I do