U

Universal Pre-Kindergarten (UPK): A movement within the U.S. education system to make access to Pre-kindergarten available to all children and families within a given jurisdiction, regardless of the child's abilities and family income. UPK services can be offered in a Mixed Delivery System. States vary in what they define as "universal" and in how far they have progressed, or desire to progress, towards implementation.

Unlicensed Child Care: Child care programs that have not been licensed by the state. The term often refers to Legally/License-Exempt Child Care that can legally operate without a license as well as a program that illegally operates without a license. Unlicensed child care is also referred to as unregulated or non-regulated child care.