It countered the constraints of racial segregation in Louisiana and expanded employment opportunities for Southern University students majoring in education.

From its beginning in 1922 until the present time, a major objective of the Laboratory School has been to participate in the preparation of teachers, while providing a good elementary and secondary education for college-bound students.

Though semi-private, the school flourished as many of the Southern University educators and administrators as well African-Americans in Scotlandville and Baton Rouge enrolled their children.

Its graduates are found in the ranks of doctors, dentists, psychologists, psychiatrists, lawyers, engineers, journalists, newscasters, artists, filmmakers, athletes, university administrators, military officers, entrepreneurs, educators, corporate executives, religious leaders and other professionals.

[3] In August 2013, the school established the "Mini Lab" program in which university professors gave instructional sessions to the K-12 SULS students.