1998-99 ACT Average Composite Scores for Home Schooled Students by State
National Center For Education Statistics: Homeschooling in the United States: 1999
National Center For Education Statistics: Homeschooling in the United States: 2003
Home Education Across The United States: Family Characteristics, Student Achievement, & Longitudinal Traits
Homeschooling Works!
Statistical Brief (907k)
Raymond Moore's TCR Article(large pdf file - allow load time)