I don't even know what this means because you can't "guarantee" a student learns anything. The student still has to do the work needed for them, specifically, to learn the material. Of course this can be made easier by good teaching, but there is no one-size fits all, so this comment sounds weirdly hyperbolic.
I came here looking for a review of this test bank. I don't know if they provide rationales in this bank but they definitely do in the SAT bank, and that bank is regarded as the best SAT bank you can find.
A test bank isn't designed to be the primary source of your learning.
I've learned from this site that failing out of a CUNY nursing program pretty much bars you from entry into others. But if one was rejected from entry into, say, the BMCC program for not making the cutoff, could that person still apply and possibly be accepted into, say, the City Tech program? How damaging is having that rejection, to future prospects?