Researchers examined enrollment and family income data from the past 50 years at Catholic, other religious, and nonsectarian private elementary schools (that is, schools serving grades K-8). The study used data on families' incomes and elementary-school choices from the decennial census, Current Population Survey, U.S. Department of Education…

We use two nationally representative data sets to estimate the prevalence of kindergarten "redshirting"--the decision to delay a child's school entry. We find that between 4% and 5.5% of children delay kindergarten, a lower number than typically reported in popular and academic accounts. Male, White, and high-SES children are most likely…