Portfield School in Haverfordwest will remain closed tomorrow (Tuesday 13th October).
It follows the identification of positive Covid-19 cases at the school.
The school is now working closely with Hywel Dda University Health Board to ensure that everyone who needs to isolate does so.
A further update will be issued in due course.
The school has been deep cleaned today to ensure that it can re-open safely to all learners as soon as possible.
The school will be staying in touch with parents and pupils to keep them fully informed.