Click here for a copy of the School City of Hammond 2015-2016 SCHOOL CALENDAR. Principal Wilson would like to congratulate the George Rogers Clark MS/HS Community for achieving full AdvancED / NCA CASI Accreditation! Click here to learn more! Our student store ("The Trading Post") is NOW OPEN! Click here for more information. Attention Students & Parents: Click here to view the new GRC MS/HS Student Handbook.