According to our records, this business is located at 2501 Pike Creek Rd. in Wilmington (in New Castle County), Delaware 19808, the location GPS coordinates are: 39.7179265 (latitude), -75.6880488 (longitude). St Marks High School is categorized under Private Junior High School (SIC code 8211). Known organization principal is Mark Freund. Current estimates show that the unit has a sales volume of $4,200,000 and staff of approximately 150 people. You can contact the company by phone at (302) 738-3300.