Kaplan Diagnostic: 430
800 Score.com Test 1: 440
Kaplan 1: 530
Kaplan 3: 560
Kaplan 4: 580
Kaplan 6: 580
Ult. Practice (Kaplan 5): 610
GMAT Prep 1: 640
GMAT Prep 2: 620
ACTUAL TEST: 640
Each one of these tests was taken at the same time of day and in similar circumstances.