The guidelines are stricter than CDC guidelines, which say that students and teachers do not have to wear masks if they've been vaccinated.
Children may soon be eligible for Covid-19 vaccinations, potentially helping California schools to fully reopen for in-person instruction.
Some districts will pivot quickly and return to full in-person instruction now; others say they can now start planning for the fall.
The change could allow more students back to school for in-person instruction at the same time, reducing the need for hybrid instruction.
Campus leaders across California are asking students to help lower the risk of spreading Covid-19 by staying local during spring break.
State and federal guidelines are similar in many respects, but California is stricter on when Covid rates permit schools to reopen.
Disagreements over vaccinations and extensive Covid testing appear among issues yet to be resolved for elementary students to return to class.