There are sizable and pervasive academic achievement gaps between minority and non-minority students in the United States. Non-minority students -- particularly boys -- are more likely to enroll in school one year after they become eligible, a practice known as 'redshirting.' Consequently, non-minority students are on average more mature than…

This study examined relationships between specific data on students referred for and placed in the exceptional children's program. The context is a rural North Carolina county and included 206 records of K-6th graders spanning academic years 2007-08, 08-09 and 09-10. The kindergarten entrance ages of students were divided into categories of on…