The ALSP traces its beginnings to a series of informal meetings among law students from Adamson, Arellano, Ateneo, FEU, Lyceum, MLQU, PLM, PLS, San Beda, San Sebastian College, UE, UM, UP, and UST. Those who attended the said meetings agreed to form a network, which will coordinate and support each other in both academic and non-academic endeavors.
On November 2, 1989, the Founding Congress was held with the theme "Achieving Unity in Excellence, Justice and Responsibility". The General Assembly ratified the constitution and adopted the name Association of Law Students of the Philippines (ALSP).
The first major activity of the ALSP was the "Conflicts of Law", an annual sports and academic competition among law students and professors in the National Capital Region, on February 10-11, 1990.
It became a national organization when it had its 1st National Conference at the University of the Philippines on April 28-29, 1990. The theme of the conference was "Unity for Excellence and Social Responsibility". By this time, the ALSP has already twenty seven (27) member law schools.