HESI

HESI refers to several organizations and initiatives, most commonly Health Education Systems, Inc. (HESI), which provides exams (like the HESI A2 for nursing school admission and the HESI Exit Exam for NCLEX prep) and study materials for health professions. It also stands for the Higher Education Sustainability Initiative (HESI), a UN partnership promoting sustainability in universities, and the Health and Environmental Sciences Institute (HESI), focused on global health and environmental challenges.