Ok, being military (tests are free), I've taken a heck of a lot of exams. Here's the scores for everything I've taken using ONLY InstantCert.com study preparation. The first number is my score, and the one in parentheses is the cutoff score:

67 (50) History of U.S. I (CLEP)
67 (50) History of U.S. II (CLEP)
66 (50) Introductory Sociology (CLEP)
61 (50) Principles of Macroeconomics (CLEP)
61 (50) Principles of Microeconomics (CLEP)
70 (46) Management Information Systems (DANTES)
71 (50) Principles of Management (CLEP)
63 (50) Introductory Psychology (CLEP)
63 (48) Here's to your Health (DANTES)
57 (49) Drug and Alcohol Abuse (DANTES)
70 (46) Ethics in America (DANTES)
63 (46) Principles of Supervision (DANTES)
63 (48) Introduction to World Religions (DANTES)
55 (47) General Anthropology (DANTES)
46 (47) The Civil War and Reconstruction (DANTES) (my only failure!)
66 (46) Introduction to Business (DANTES)
61 (49) Criminal Justice (DANTES)
64 (46) Human Resource Management (DANTES)
57 (45) Introduction to Law Enforcement (DANTES)
51 (48) Money and Banking (DANTES)
49 (46) Principles of Finance (DANTES)

Studying for me is usually a two step process.

1) I say "with this test I'm really going to buckle down and devote time and thought and energy to this".

2) Two days before the test I say "oh crap I forgot to study", and cram the next two nights in a row.

Obviously, InstantCert.com has pulled me through even still. I've retaken Civil War using only InstantCert (but devoting a little more time) -- hopefully I can correct my one failure .

slaughterhause