Alpha Lambda Delta is an honor society for students who have achieved a 3.5 GPA or higher and are in the top 20% of their class during their first year or term of higher education.
Alpha Lambda Delta was founded in 1924 by the Dean of Women, Maria Leonard, at the University of Illinois to recognize academic excellence among freshmen women. One year before, Dean Thomas Arkle Clark had founded Phi Eta Sigma, an honor society to recognize academic excellence among freshmen men. Both groups operated as single sex organizations until the mid-70s when they both became coeducational in response to Title IX.
At the first meeting of the chapter, Florence Finn, president of the society, presented a passage from Plato's Republic in which Socrates asks the question, “Will they hold torches and pass them to one another...?”. This idea, together with the symbol of a candle and the concept of sharing the love of learning with others, caught the imagination of the charter members.
The honor society soon became a national organization through the chartering of chapters at Purdue University in 1926, at DePauw University in 1927, at the University of Michigan in 1927, and at the University of Oklahoma in 1929. The first national convention was held in 1930 on the campus of the University of Illinois. Conventions were suspended during the Depression years because of travel expenses. The third convention was held in 1938 at the University of Michigan. A decision was made at that convention to suspend holding a national convention and to invest those funds into establishing a graduate fellowship fund. The first fellowship was awarded to Louise Houssiere for graduate study at MIT in 1940.
The Association of College Honor Societies was organized in 1925 to consider matters of mutual concern to member organizations; Alpha Lambda Delta has been active in the Association since its admission to membership in 1939. In 1976 in response to Title IX, the National Council voted for the Society to become coeducational. In 1981, the first two male members of the National Council were installed.