Where do I deduct the cost for MCAT study programs?

MCAT study programs are not tax deductible.  According to the IRS:

To be deductible, your expenses must be for education that (1) maintains or improves skills needed in your present work or (2) a law requires to keep your present salary, status or job. However, even if the education meets either of these tests, the education can't be part of a program that will qualify you for a new trade or business or that you need to meet the minimal educational requirements of your present trade or business.

Study programs for the MCAT, LSAT, GMAT, GRE are generally not tax deductible.