Most California schools will likely remain closed for the rest of the school year because of the new coronavirus, Gov. Gavin Newsom said Tuesday.

Nearly all the state’s schools have already shut down as the most populous state tries to stop the spread of the virus, and the rest will soon, he said.

“I would plan and assume it is unlikely that many of these schools, few if any, will open before the summer break,” he said in a news conference streamed online.

“I don’t want to mislead you, to six-plus million kids in our system and their families, they need to make some plans at a time when a lot of plans are already being curtailed,” said Newsom, a father of four children. “But planning with kids is some of the most challenging planning.”

The state has applied for a federal waiver that means children would not have to face academic tests once they eventually return to school, said Newsom, a Democrat.

“We think it is totally inappropriate for kids to worry about coming back and being tested,” he said.