Schools in Hong Kong will remain shut until April 20, as cases of coronavirus surged outside China.
The city's Secretary for Education Kevin Yeung said the decision to extend the school closure was made as "the coronavirus has not shown any sign of dying down".
An earlier announcement said students were due to return to their classrooms on March 16.
Many schools in Hong Kong have already switched to online learning and lessons by conference call, with assignments given out on a daily or weekly basis.
The exact date of resumption would be evaluated later, the official added.
So far, the city has reported two deaths and 81 confirmed cases.


US, Iran inch closer to deal, timing remains unclear
India Air Force plane crash kills all five onboard
Ukrainian strike kills one, wounds 3 in southern Russia
Trump says US military strike killed leader of Venezuela's Tren de Aragua gang
Qatar rejects media report on energy production decisions
Trump says Iran war deal close as Strait of Hormuz tensions linger
Victims' families mark Air India crash anniversary with prayers and tributes
Ebola outbreak spreads to crowded displacement camp in Congo
