Stratford Academy voted to make the move to the GHSA Monday evening.
In a statement released by Stratford, officials said:
"After months of study and deliberation, Stratford Academy's administration and Board of Trustees have made the decision to apply to the GHSA for eligibility to compete in that association beginning with the 2014-15 season. We are grateful to everyone in the Stratford community who provided input into this decision, which was a difficult one. The GISA has been a great home for Stratford's competition in athletics and other activities, but we look forward to embarking on new challenges as we return to the GHSA."
Stratford Athletic Director Grady Smith said the school "has many wonderful memories from our time spent in the Seais-GISA. But it was time to go especially because of the changing landscape right now. It was just time."
Smith said Stratford captured 171 State Titles in the GISA-SEAIS. He also said Stratford won 12 state titles when it was a member of the GHSA before 1970.
Stratford joins Mt. de Sales in making the move to the GHSA for the 2014-15 school year.
First Presbyterian Day School is completing its third year in the GHSA.
Soon after Stratford Academy made its announcement of moving to the GHSA, Tattnall Square Academy made a similar announcement Monday night.
The Board of Trustees at Tattnall voted on the move during a called meeting after "careful consideration of the facts, prayer and input received from a committee consisting of administration, parents, coaches, and teachers."
The school said, "The board believes this decision best fits the mission of Tattnall which guides us in all that we do," in a press release.