DeVry University is a regionally accredited university with most classes able to be transfered to any other regionally accredited university in the country, including ones like MIT or Harvard. I'm curious if your previous "Bachelor's degree" was from a nationally accredited school, such as Full Sail, which are not transferable to regionally accredited schools.

I'm curious which class(es) you had problems with tests in. Every class I've taken (about 68 credit hours worth now) at DeVry have been very challenging and often difficult. My chief if only complaint has been that there are occasionally too few questions on the tests so that when you miss one (which is easy to do even though they are open book, that's how hard they are; DeVry forces students to sometimes learn outside of the "book") it can give you a low A or B with just that 1 missed question. But even that complaint is only on the weekly tests. The final exams often take the full 3.5 hours they give you to do them because there are so many questions and essays. (Typical final exams I've had would be 60+ multiple choice and 5+ essays.)

If you have a problem with a professor, perhaps you should talk to one of the deans or other faculty members; like at any other university? Every professor I've had at DeVry so far has had no less than a Masters Degree; some even with multiple MS and PhD's.