CognitiveGenesis collected achievement and ability test data from 2006-2009 for all students in Seventh-day Adventist schools in North America. Students were above average in achievement compared to national norms and achieved above that predicted by their ability scores. The more years students attended Adventist schools, the higher they achieved, compared to the norm group. Change in students' achievement and ability over 1-3 years was greater than the change in the norm group for both males and females and students in all ethnic groups. Change in achievement and ability for students of all ability levels was equal to or greater than the change in the norm group. (Contains 7 tables.)