Marengo Community High School is a public high school located in southwestern McHenry County, Illinois, that serves the communities of Marengo and Union, as well as the surrounding rural areas. The school has an enrollment of approximately 700 students. References Notable alumni Ken Dunek, former NFL and USFL tight end External links Marengo Community High School website Schools in McHenry County, Illinois Education in McHenry County, Illinois Public high schools in Illinois