In 1980, there were approximately 14.6 million students enrolled in high school (grades 9–12) in the United States. Of that number, about 13.2 million were in public schools and 1.3 million were in private schools. By 1990, the total number of high school students had decreased to 12.5 million. Since that time, however, high school enrollment has increased, reaching 16.4 million in 2008. It is projected that between 2009 and 2012, overall high school enrollment will decrease to 15.7 million and then increase again, to 16.3 million by 2020. It is projected that public school enrollment will increase between 2012 and 2020 from 14.5 to 15.2 million students, while private school enrollment is projected to decrease from 1.2 to 1.1 million students in this time period.