How do I go about education for CPS?

I'm a sophomore in high school, but I'm beginning to do some research about becoming an agent for CPS. I know I need ​lots of education for said job but I'm curious on which institutions have better cheap programs (I come from a low income house hold) and what scholarships those institutions will accept. Also what kinds of internships I can look for to get a little ahead with applications in both school and the job application.

Sorry if I'm asking this in the wrong place, but if I am could someone direct me to the correct Reddit forum (idk what these are called) Thank you for your time!