Long before I was homeless, I had a class on Homelessness and Public Policy through SFSU. I am aware policy matters. But, I am kind of a fan of That government is best which governs least.
When I was first on the street, I went to meal sites, etc for a time. I mostly hate programs intended to "help the homeless." They mostly suck. Homeless people are just people without housing. If we get off the street, we stop being The Homeless.
If we focused more on solving things like the huge shortage of affirdable housing in this country, a lot more people like me could solve our own damn problems without having to go through some program where we will be treated like idiots who should be grateful for what is often rather abusive treatment. Let me recommend these two links:
https://news.ycombinator.com/item?id=12639356
http://micheleincalifornia.blogspot.com/2016/07/minimum-dece...
Thank you very much for teaching math. That is always a good thing. I tutored math for free as a member of Mu Alpha Theta (a collegevlevel math honor society) in 11th grade. A lot of math instruction really sucks. Props to you on that account.