Today we talk to L.A. Times education and science reporters about the full reopening of schools, which will affect millions of families in California and beyond. The Centers for Disease Control and Prevention mostly OKed this reopening, with the provision that everyone should mask up in schools and, if 12 or older, be vaccinated against COVID-19.But what if your kids are younger than that? How about if they develop symptoms or come into contact with someone who tested positive for the coronavirus? What safety measures should schools be prioritizing?More reading:California students are going back to school. We answer parents’ most pressing questions‘Que locura,’ this is madness. First-day-of-school delays frustrate students and parents$350 million. 1,000 healthcare workers. 500,000 tests weekly. Inside L.A. Unified School District’s virus testing effort