The poor air quality in Berkeley has prompted schools, colleges and outdoor events to shut down.
The Berkeley School Board took the first steps towards revocation Wednesday night, but officials said they hope to avoid following through.
A new state law requires free supplies at schools with high poverty levels, but a Berkeley policy could go further.
A proposal before the School Board this week could bring more climate-change lessons and compost bins into schools.
CalSTRS will take $12 million out of CoreCivic and GEO Group.