Interesting infographics demonstrating that sixth graders in the richest school districts are four grade levels ahead of children in the poorest districts.
Trying out CryptUp: https://cryptup.org/. So far I like it. Chrome plugin for Gmail, end-to-end, gives option to make one-off email password if recipient doesn't use CryptUp.
This article summarizes various studies that show that active learning if more effective than the traditional lecture, particularly for women and students of color.