The tests conducted on 9-, 13- and 17-year-old students for the National Assessment of Educational Progress have included private school students since 1977. During the 20 years they have participated in the NAEP testing, private school students have consistently scored significantly above the national average in reading, mathematics, and science.
According to the latest report from the National Center for Educational Statistics, private school students outperformed their public school peers across all grade levels and subject areas tested by margins ranging from 11 to 23 points on the NAEP scale.
