Collective Bargaining Agreements This list contains PDF copies of each of the districts’ collective bargaining agreements. Bus Drivers 2018-2021 CCHS Building Services 2018-2021 CCHS Tutor Contract 2019-2022 CCTA Contract 2017-2020 CPS Building Services 2018-2021 CTA Contract 2019-2020 Maintenance 2018-2021 Secretaries Unit 2017-2020