Scores are averages based on the performance of graduating seniors in each of the years shown. Average scores typically do not equal 500 because each year's scores are based on a cumulative reference group made up of the previous six (2003-2024) to ten (2025+) years' graduates. The composition and performance of the reference groups differ somewhat from year to year.

* Annual averages are not available for 2019-20 due to the effect of COVID-19 on sample sizes and the restriction of the available data to Summer/Fall 2019.

Beginning with 2018-19, standard deviations are included in parentheses.