I am planning on starting Carrington in June. I recommned going to their website or give them a call and go to the next information orientation. They will lay out everything that's included/involved with their program. I chose Carrington because I don't have to do 3 years (because of my work schedule and how each class has a pre-req of another that has a pre-req of another) of pre-requisittes, including math and science classes.
Carrington offers your math and science classes, along with human anatomy and physiology in the first two of the six semesters. Check out their website or call Pamela, she's the admissions coordinator! Her office number is 335-2931