Should public schools provide free breakfast & lunch for ALL students?

I was watching a TED talk with Sam Kass, who worked with the Obama administration and helped implement a program where schools that had 40% low income children the whole school gets free lunch.

This was from his talk:

Regarding the program he helped implement...

This program has been incredibly successful, because it helped us overcome a very difficult barrier when it came to getting kids a nutritious breakfast. And that was the barrier of stigma. See, schools serve breakfast before school, and it was only available for the poor kids. So everybody knew who was poor and who needed government help. Now, all kids, no matter how much or how little their parents make, have a lot of pride. So what happened? Well, the schools that have implemented this program saw an increase in math and reading scores by 17.5 percent. 17.5 percent. And research shows that when kids have a consistent, nutritious breakfast, their chances of graduating increase by 20 percent. 20 percent. When we give our kids the nourishment they need, we give them the chance to thrive, both in the classroom and beyond.

I thought his ideas were interesting and wanted to see what cc thought. My daughter isn’t aware of who has free or reduced lunch/breakfast at schools and I don’t think I was when I was in school, but maybe it varies from school to school. So I’m not sure.

Bonus questions:

-What would be the pros and cons of free meals at schools?

-Were you aware of who received government assistance for meals?

-Did you or do your kids receive government assistance and how has it helped?