Since its inception in 1947, Aggie Day annually brings thousands of high school students to campus for interscholastic competitions.

Held on the first Thursday in April, more than 2,000 4-H and FFA members from across Oklahoma, Missouri, Arkansas and Texas compete in 22 distinct interscholastic contests. The event not only allows students to compete in knowledge- and skill-based competitions, but also introduces them to student life as they engage with faculty, staff, and college students.

In the fall of 2006, the Division of Agriculture under the leadership of chair Debra Golden, initiated Junior Aggie Day as an interscholastic competition for eighth, ninth and tenth grade students. Competitions include agri-science and animal science quiz bowls, opening ceremonies contests, and some senior-level events in a more limited form.