RCHS can refer to many things:

Primary and secondary schools

• Rock Canyon High School in Highlands Ranch, Colorado
• Raleigh Charter High School in Raleigh, North Carolina
• Rancho Cucamonga High School in Rancho Cucamonga, California
• Rensselaer Central High School in Rensselaer, Indiana
• Richland Collegiate High School in Dallas, Texas
• Rochester Community High School in Rochester, Indiana
• Rockdale County High School in Conyers, Georgia
• Roman Catholic High School for Boys in Philadelphia, Pennsylvania
• Rushville Consolidated High School in Rushville, Indiana
• Rappahannock County High School in Washington, Virginia
• Roselle Catholic High School in Roselle, New Jersey
• Rancho Cotate High School in Rohnert Park, California
• Ruleville Central High School (now Thomas E. Edwards, Sr. High School) in Ruleville, Mississippi
• Reed-Custer High School in Braidwood, Illinois
• Richmond Community High School in Richmond, Virginia

Other:

• Railway and Canal Historical Society, Great Britain's principal transport history society

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