The District of Columbia (“District”) Department of General Services (“DGS” or the “Department” ) is issuing this Request for Proposals (“RFP”) to solicit design-build proposals (“Proposal(s)”) from offerors (“Offeror(s)”) interested in serving as the design-builder (“Design-Builder” or “Contractor”) for the modernization of MacArthur High School (“MacArthur HS”), which is located at 4530 MacArthur Blvd NW, Washington, DC 20007(“Project”).