The Howard County Public School System (HCPSS) has announced graduation dates for the Class of 2021. River Hill High School will hold the 2021 Commencement Ceremony on Friday, June 4 at 3:00 PM at Merriweather Post Pavilion. The last day for seniors is Friday, May 28. More information for senior activities and schedules will be shared in the coming weeks. The complete HCPSS graduation schedule can be found on the HCPSS website.