LOG IN Home Currently selected ACPS Employee Self Service Welcome to ACPS EMPLOYEE SELF SERVICE (ESS) & VENDOR SELF SERVICE (VSS). LOGIN INSTRUCTIONS ACPS EMPLOYEE SELF SERVICE Click on the link “Log In" on the upper right corner of this screen. Then, type in your User name (employee id#) and Password. *For FIRST-TIME ESS USERS, your login is your ACPS employee id#, and your password is the last 4 digits of your Social Security number. You will then be prompted to change your password. ESS Log Out Instructions: To log out of ACPS ESS, click on your name and then click the link "Log Out" on the upper right corner of this screen. ACPS VENDOR SELF SERVICE: *Vendor Self Service has moved, to be directed to our Vendor Self Service site please CLICK HERE. Thank you! ©2021 Tyler Technologies, Inc.