The number of homeschooled children in the United States has increased by 75 percent since 1999, according to a new report published in Education News, CBN News reports. The study's findings serve as more proof that a growing number of parents are rejecting public schools. According to the report, discrepancies in achievement between sexes, income level and ethnicity are nonexistent in homeschooling. "Recent studies laud homeschoolers' academic success, noting their significantly higher ACT-Composite scores as high schoolers and higher grade point averages as college students," the report said. Researchers also found the number of primary-aged homeschool kids is growing seven times faster than public school kids. According to Dr. Brian Ray of the National Home Education Research Institute, the increase is partly because the large number of children homeschooled in the 1990s are now homeschooling their own children. Currently, 4 percent of all school-age children are educated at home.