Keller ISD's Purchasing Department utilizes purchasing cooperative contracts and encourages vendors to respond to solicitations issued by purchasing cooperatives that have been pre-approved by KISD Purchasing. 

These pre-approved purchasing cooperatives are as follows: 

Texas Department of Information Resources (DIR)
The Interlocal Purchasing System (TIPS/TAPS)
Texas SmartBuy
Texas Multiple Award Schedule (TXMAS)
BuyBoard
Tarrant County Cooperative Purchasing
Houston/Galveston Area Council of Governments (HGACBuy)
OMNIA Partners
Choice Partners
Allied States Cooperative (Region 19)
National Cooperative Purchasing Alliance (NCPA)

Educational Purchasing Cooperative of North Texas (EPCNT)

KISD Purchasing also utilizes contracts issued by other school districts on a case-by-case basis.