Data update history
June 15, 2023
Posted financials
Added Form 990 for fiscal year 2022
June 13, 2023
Updated personnel
Identified 6 new personnel
May 19, 2023
Updated personnel
Identified 4 new personnel
September 28, 2022
Used new vendors
Identified 1 new vendor, including
Nonprofit Types
SchoolsK-12 schoolsHeadquarter / parent organizationsCharities
Issues
Education
Characteristics
Endowed supportTax deductible donations
General information
- Address
- 56 Halsey Blvd
- Charleston, SC 29401
- Metro area
- Charleston-North Charleston, SC
- County
- Charleston County, SC
- Website URL
- masonprep.org/Â
- Phone
- (843) 723-0664
IRS details
- EIN
- 57-0447248
- Fiscal year end
- May
- Taxreturn type
- Form 990
- Year formed
- 1964
- Eligible to receive tax-deductible contributions (Pub 78)
- Yes
Categorization
- NTEE code, primary
- B25: High School
- NAICS code, primary
- 611110: Elementary and Secondary Schools
- Parent/child status
- Central organization
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