A single-user license is good for one person. That one person may have the software activated on up to two computers at any one time. You can activate the software on a new computer by first deactivating it from one that it is currently activated on. A single-user license does not expire.
A site license is good at "one contiguous property of one school." Most schools are only one site and so only require one site license. Schools with multiple campuses require a site license for each campus that they want equipped. Two different schools with adjoining campuses require separate licenses. Two entities are considered different schools if they have different principals.
A site license may be installed on an unlimited number of computers at a site, on that site's network, and on laptops based at that site, even if the laptops are taken home. Also, each teacher at the site can install the software on one home computer. Site licenses are good for three years unless an alternative duration is elected at purchase. About renewing site licenses.
We do not have a separate license agreement for districts. Instead, districts can purchase site licenses for each school to be equipped. For example: