St. Thomas More Academy was a private Roman Catholic high school in Magnolia, Delaware.

After the closing of HCHS in 1987, a group of laymen and women formulated plans for a new Catholic high school in Kent County.

When, after some years, a gift of land provided the site for the school, the group commissioned a feasibility study and embarked upon a fundraising campaign.

The project of opening a high school of quality required resources beyond those available to the founders of Thomas More Academy, Incorporated.

A major building project, with the support of the Diocese, saw the expansion of STMA in 2003; the Chapel, lobby, office suite, cafeteria, media center, and fine arts wing were added.

Acknowledging the work done by the followers of the Academy, Bishop Saltarelli said, "I am grateful for the great gift they have made to the Church, making it possible for us to continue our holy mission to teach the Good News in such an important way."

In 2020 it was announced that, due to low enrollment numbers, St. Thomas More Academy would finally close its doors just over two decades after they opened.