Community Unit School District 300 could refer to:
DeKalb County is a county located in the U.S. state of Illinois. As of the 2020 United States Census, the population was 100,420. Its county seat is Sycamore.
Carroll County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 15,387. Its county seat is Mount Carroll.
Carroll Township is a township in Vermilion County, Illinois, USA. As of the 2010 census, its population was 612 and it contained 263 housing units.
Catlin Township is a township in Vermilion County, Illinois, USA. As of the 2010 census, its population was 3,300 and it contained 1,342 housing units.
Derinda Township is one of twenty-three townships in Jo Daviess County, Illinois, USA. As of the 2010 census, its population was 321 and it contained 176 housing units.
Pleasant Valley Township is one of twenty-three townships in Jo Daviess County, Illinois, USA. As of the 2010 census, its population was 273 and it contained 157 housing units.
Cherry Grove-Shannon Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 1,485 and it contained 799 housing units.
Rock Creek-Lima Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 1,976 and it contained 933 housing units.
Elkhorn Grove Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 229 and it contained 98 housing units.
Fairhaven Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 910 and it contained 421 housing units.
Freedom Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 695 and it contained 974 housing units.
Mount Carroll Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 2,279 and it contained 1,101 housing units.
Salem Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 348 and it contained 169 housing units.
Savanna Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 3,729 and it contained 2,004 housing units.
Washington Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 356 and it contained 198 housing units.
Woodland Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 280 and it contained 167 housing units.
Wysox Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 1,366 and it contained 644 housing units.
York Township is one of twelve townships in Carroll County, Illinois, USA. As of the 2010 census, its population was 1,734 and it contained 929 housing units.
Eastland High School, also known as Eastland, or EHS, is a public four-year high school located at 500 School Drive in Lanark, Illinois, a small city in Carroll County, Illinois, in the Midwestern United States. EHS serves the communities and surrounding areas of Lanark, Lake Carroll, Georgetown, and Shannon. The campus is located 25 miles north of Sterling, Illinois, and serves a mixed small city, village, and rural residential community.