Tweeted By @JohnHolbein1
Can you guess what happened when South Korea made school lunches free for all students?
— John B. Holbein (@JohnHolbein1) April 20, 2019
The number of fights at school went down dramatically.https://t.co/xlqUL1YGpe#SocSciResearch pic.twitter.com/SQltjArdYp