This school originated as Madison Academy, founded in 1886 in Madisonville by John Hodges Allen (1854-1920), an educator from Mississippi. When his brother Rivers O. Allen (1865-1925) joined him in 1896, the institution became Allen Academy, a private boarding school for boys. During the summer of 1899, the Allens moved the school to Bryan. In the early years of the 20th Century, enrollment steadily increased. The campus was enlarged and new buildings erected to accommodate the students. During World War I, military training was introduced. In 1925 John Allen's son Nat Burtis Allen (1892-1946) became director of the school. During his tenure, the academy continued to grow and gained national recognition. When he died in 1946, the campus contained over 300 acres, including a farm and dairy. His son Nat Burtis Allen, Jr. (1919-1973) guided the institution until 1973 and led in establishing broader curriculum. Allen Academy is the oldest accredited, non-sectarian preparatory school for boys operating in Texas. Its graduates include leaders in government and business. Today the institution is coeducational and offers a broad range of scholastic programs for boarding and day students.