Kaplan practice test scores?

Last weekend my daughter took the free Kaplan on line tests that did ACT and SAT back to back so we could see which she scored better in so we could decide how to focus her time. It looked like SAT was slightly better with a score of 1150. The test was advertised as a regular SAT practice test not pre-SAT etc. Did anyone else take these and think that the practice Kaplan test was correlated to later real tests? Any other places for free practice on line tests? Figure she will wait a year and then really focus on it and she will need to practice at a school setting. Any thoughts?

Jenn