Webthe mission of the hays cisd student information systems (sis) department is to manage student data and ensure its accessibility for district staff through training,. Webwelcome to the hays cisd parent self serve portal. Click the new users link below to create your pss user id and password. You need the following information to create. Websign in id password. Hays cisd system application. Webwelcome to the hays cisd student self serve portal. Please sign in using your school login. Your user id will be your student number (lunch number). Webenter…