were www.census.gov estimated 11% 19.7 million were 55.5 million K-12 students 3.2 million 7 million teachers enrolled in college testing U.S. National Center for Education Statistics third of the total number U.S. Census Bureau 55 million students Facts for Features 55.5 million K-12 students 7 million teachers 20 million 55 million students universities nationwide 55.5 million were 20 million universities nationwide 7.2 million school teachers million according to statistics from the U.S. Census Bureau were 55.5 million preK-12 students compiled by our friendly Census Bureau U.S. Census Bureau back-to-school statistics 3.2 million census figures http://www.census.go.../cb11-ff15.html 20 million Americans enrolled in college census figures 55.5 million 7 million teachers 55 million enrolled in college testing million 7 million teachers in the United States 55.5 million million testing back-to-school statistics testing U.S. Census Bureau enrolled in college 7.2 million school teachers as of the latest census data Facts for Features for the 2011-2012 school year 55 million students 7 million teachers in the United States Facts for Features for the 2011-2012 school year 55 million students 7 million teachers U. S. Census 55.5 million according to the US Census 7 million teachers 7 million teachers 20 million 55 million students Back to School: 2011-2012 enrolled in college http://www.census.go.../cb11-ff15.html apparently 55 million students estimated