For more coverage, visit our complete coronavirus section here.

UPDATE, March 8, 4:45 p.m. Including all events and gatherings, Lowell High School will remain closed on Monday to continue enhanced cleaning, according to a statement from the district on Sunday afternoon.

Additionally, the all-girls Immaculate Conception Academy Cristo Rey will close for two weeks, reopening on Mar. 20. The school said a custodial staff member tested positive for the virus, but that no students or other staff had "direct or prolonged contact" with the employee.

LATEST, March 8 Archbishop Riordan High School in San Francisco is canceling class Monday after a parent of a student tested positive for COVID-19. The all-boys Catholic school is undergoing a deep cleaning and working with local health officials.

"We plan to update you on Sunday about further plans, and at this time, we expect classes to continue as usual on Tuesday," a statement to parents read.

Lowell High in San Francisco announced Thursday afternoon it was closing immediately and canceled class on Friday.

"The District has just learned this afternoon that a relative of a Lowell High School student is being treated for COVID-19, also known as coronavirus. Out of an abundance of caution and for the safety and well-being of our community, we have decided to close the school and all events and gatherings for the time being," SFUSD said in a statement last week.

The largest school district in Northern California and the fifth-largest in the state is closing next week amid coronavirus concerns. Elk Grove Unified School District in southern Sacramento County made the announcement Saturday; a family from the district was quarantined after testing positive for COVID-19, a novel coronavirus.

UPDATE, March 5, 8 p.m. KTVU reports a San Jose preschool is closed after a teacher tested positive for COVID-19.

Action Day Primary Plus is closed until Monday for a deep cleaning. The teacher hasn't been at the school since Feb. 27.

UPDATE, March 5 Presidio Hill School, a private school in San Francisco, closed Thursday as a precautionary step after learning that a student's relative was on the previous Grand Princess cruise, the San Francisco Chronicle wrote. The Grand Princess cruise is currently being held off the California coast.

"The family involved has been incredibly thoughtful and proactive in sharing information with PHS once they were notified of the potential exposure to COVID-19, and I am deeply appreciative," Head of School Lisa Jeli wrote in a newsletter to students and parents. "The extended family member has not shown any symptoms, and the family’s healthcare provider has not issued a quarantine for the extended family member or any other members of the family."

The school will remain closed Friday, March 6 for deep cleaning and reopen next week.

UPDATE, March 5, 2:30 p.m. Lowell High School in San Francisco announced Thursday afternoon it is closing immediately.

"The District has just learned this afternoon that a relative of a Lowell High School student is being treated for COVID-19, also known as coronavirus. Out of an abundance of caution and for the safety and well-being of our community, we have decided to close the school and all events and gatherings for the time being," SFUSD said in a statement.

The student wasn't on campus after lunchtime Thursday, according to the district. The student hadn't reported any symptoms but was being monitored in quarantine.

All classes and events were canceled Friday and the district said it would provide an update before Monday.

UPDATE, March 5, 11 a.m. A charter school in Oakland closed Thursday, reportedly due to possible coronavirus exposure.

Oakland Unified School District confirmed the closure of Aspire Monarch Academy and said the school, not the district, made the decision and couldn't provide more details.

KRON reports the school is closing for "an undetermined period of time because a staff member came into contact with someone who had been exposed to COVID-19 novel coronavirus. Neither the staff member or the person they came in contact with has tested positive."

The elementary school is comprised of transitional kindergarten through fifth grade and is located in East Oakland on 101st Ave. near 14th Street.

Aspire wasn't immediately available for comment.

UPDATE, March 5 Black Pine Circle, a private elementary school in Berkeley, announced they would close Thursday and Friday to perform a deep cleaning after one family recently traveled abroad.

On Wednesday, Head of School John Carlstroem emailed families to alert them that the school would close "out of an abundance of caution," Berkeleyside wrote.

"Our administration learned this afternoon that a BPC family, who traveled on internationally over Presidents’ Week break, was potentially exposed to COVID-19. No one in this family is showing any symptoms of the virus. In conversations with Berkeley Public Health Officer, Dr. Lisa B. Hernandez, and her coordinators at California HAI CDC, we were told that asymptomatic individuals are not considered contagious."

The school will reopen on March 9.

UPDATE, March 4 An exclusive private school on the San Francisco Bay Area's Peninsula closed Wednesday due to a staff member having contact with a relative who tested positive for COVID-19.

The Menlo School in Atherton is working with California Department of Public Health and the U.S. Centers for Disease Control as the property at 50 Valparaiso undergoes a deep cleaning performed by a service.

"Out of an abundance of caution and for the safety and well-being of our community, we have decided to close the school through the weekend," Than Healy, head of school, said in a statement.

"The school is also canceling all activities, athletics, field trips and clubs. Students, faculty, and staff are not to be on campus during this time," Healy said. "During the closure, we will continue to work with the health departments and will gain a better understanding of our employee’s situation."

Established in 1915, the Menlo School is made up of a middle school with grades 6-8 and a high school with grades 9-12. The school enrolls about 800 students.

The California Department of Public Health is advising schools to stay in touch with local public health officials and contact them immediately "in the unusual event that a student or staff member is identified who has symptoms of respiratory illness, such as fever and cough, and traveled from mainland China in the prior 14 days."

Amy Graff is a digital editor with SFGATE. Email her: agraff@sfgate.com.

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