Y11 cease isolation – Negative by a PCR lab test Posted on 28th March 202128th March 2021 by websupport@prestatynhigh.co.uk Good news, the pupil who returned a positive COVID-19 lateral flow test has now been confirmed as negative by a PCR lab test. This means that NO pupils are required to isolate from now on. Many thanks for your cooperation through this process. Neil Foley Headteacher Posted in News.