Teaching and Learning Upgrade: There is no minimum purchase.
Standard and Education Plus: The minimum number is 50 licenses; the number of purchases must be calculated based on the number of full-time students enrolled at your institution. For instance, if your school has 1,000 full-time students, you must purchase at least 1,000 licenses. For every 4 student licenses purchased, 1 faculty and staff license is provided for free. Additional licenses can be purchased for other users who may need an account (such as alumni).