(Damian Dovarganes | AP file photo) In this Saturday, Dec. 15, 2018, file photo, United Teachers Los Angeles president, Alex Caputo-Pearl, left, joins teachers who may go on strike against the nation's second-largest school district, as they rally next to the Broad Museum downtown Los Angeles. A massive teachers strike in Los Angeles is all but inevitable starting Monday, Jan. 14, 2019, after the two sides did not renew negotiations over the weekend. The teachers' union rejected a new offer Friday from the LA Unified School District after hours of talks.