To compare topscore to what is available for us that is in the same format as the actual DAT I would give it a five. As far as comparing it to the actual DAT. I would give it a 4. It really depends on what the actual DAT throws at you but it is a a pretty good indicator. The final that Kaplan gives is also pretty accurate as is the ADA's test they send when you register for the DAT or call them and order it prior to registering.