Seven schools and two nurseries in the Cardigan area will shut for two weeks from Monday due to Covid-19.
Ceredigion Council said it has become “increasingly concerned” about the spread of the virus in the area.
The authority believes “a number of super-spreader events” had led to evidence of more cases of community transmission.
In a letter, it said the nine sites would be closed until 7 December and pupils will be taught remotely.
The affected school include:
The Flying Start Nurseries in Cardigan and Aberporth will also shut, along with Cardigan library.
A number of businesses in the area have also said they will also been closed due to the spread of cases.