International Law Students Association | 14,515 followers on LinkedIn. ILSA runs the Philip C. Jessup Moot Court Competition worldwide and is dedicated to the promotion of international law. | The International Law Students Association is a non-profit association of students and lawyers who are dedicated to the promotion of international law. ILSA provides students with opportunities to study, research, and network in the international legal arena. Our activities include academic conferences, publications, the global coordination of student organizations, and the administration of the Philip C.