In 1990, Fred H. Lichtward became an owner and headmaster of the school, and pushed to expand it into a full K-12 school. In 1991 a full middle school was added. In 1995 it began the establishment of a high school, offering two academic programs. The school added another grade each year as students moved up, and it graduated its first high school class in 1999. In 2003 it received its first full high school accreditation from the Southern Association of Colleges and Schools, the National Independent Private Schools Association, and the Association of Independent Schools of Florida. In 1995 the school also added its boys' basketball program.