Seneca Valley HS www.montgomeryschoolsmd.org/schools/senecavalleyhs/ 19401 Crystal Rock Drive Germantown, MD 20874 39.17500000000001 -77.26472 Seneca Valley HS19401 Crystal Rock DriveGermantown,MD 20874 Bus Routes Magnet Bus Routes Phone: 240-740-6400 Fax: 301-916-7330 Dr. Marc J. Cohen, Principal High Staff Directory