Community High School District 155 includes four comprehensive high schools and one alternate education campus serving over 5,500 students in grades 9-12. All four District 155 high schools ranked in the top eight percent of public high schools nationally by U.S. News & World Report in 2022, which identifies the superior education our students receive. Niche.com ranked D155 as the best school district in McHenry County. The district covers 67.75 square miles and is located approximately 45 miles northwest of Chicago in McHenry and Lake counties.