Is it true that SAT Test Prep Centers make their practice test easier as the class progresses?

I have heard from people that test prep centers do this to make it look like the students are improving because of the class when that may not be the case. I go to Elite Test Prep, if anyone here has had experience with Elite, could you tell me if that is the case?

Wouldn’t that backfire, big time, when the actual test scores didn’t measure up?

Please don’t believe everything you hear. First stop and decide whether it makes sense.