This study uses three nationally representative data sets of U.S. school-aged children who are currently homeschooled and two nationally representative data sets of U.S. adults who have ever been homeschooled to empirically document the amount of time homeschooled individuals are homeschooled, how much time they spend in public- or private-school settings, and the amount of exit out of or entry into homeschooling over the course of their primary and secondary education. Findings reveal high levels of variation in when and how long individuals are homeschooled. Implications for researching the homeschooling population are also discussed.