During the 2008/2009 school year, students at Oxford University School took the Stanford Achievement Test. They scored as follows: 3rd grade tested at a 7th grade level and scored in the 86% percentile nationally in Reading, 7th grade level and 80% percentile in Mathematics, and 9th grade level and 90% percentile in Language. 4th grade tested at an 7th grade level and scored in the 73% percentile nationally in Reading, 6th grade level and 77% percentile in Mathematics, and 7th grade level and 80% percentile in Language. 5th grade tested at a 8th grade level and scored in the 77% percentile nationally in Reading, 8th grade level and 81% percentile in Mathematics, and 10th grade level and 83% percentile in Language.