By Tatiana Sanchez, San Francisco Chronicle, April 10, 2020 Hundreds of educators in San Francisco are pledging to donate part of their stimulus checks to undocumented immigrants who make up a vital part of the U.S. and regional workforce but do not qualify for federal aid under the government’s stimulus bill. United Educators of San Francisco, which represents more than 6,200 San Francisco Unified School District employees, including teachers, nurses, counselors, and psychologists, said it...