qo-hs.mcpsmd.org/ 15800 Quince Orchard Road Gaithersburg, MD 20878 39.11611000000001 -77.25417 Quince Orchard HS15800 Quince Orchard RoadGaithersburg,MD 20878 Phone: 240-740-3600 Fax: 301-840-4699 Dr. Leroy (Lee) C.Evans, Interim Principal Staff Directory