A further seven schools in Greater Glasgow and Clyde have been hit with Covid-19.
NHS chiefs tonight announced there had been positive cases identified at four Glasgow schools, one in East Dumbartonshire, one school in Clydebank, West Dunbartonshire, and another in East Renfrewshire.
Contact tracing is currently being carried out at the High School of Glasgow, St Thomas Acquinas Secondary School, Holyrood Secondary School, Caldercuilt Primary School, Lenzie Academy, Crookfur Primary School and St Peter the Apostle High School.
An NHS spokesperson said: "There is currently no evidence of internal transmission within the schools but there are positive cases.
"Apart from those who are identified as close contacts, all other staff and pupils can continue to attend as normal.
"The exception to this applies to East Renfrewshire, Glasgow City, West Dunbartonshire, East Dunbartonshire and Renfrewshire where additional COVID-19 control measures are in place.
"In these Local Authority areas, any close contacts of someone who has tested positive for COVID-19 are being advised that they and all those in their household group, should self-isolate for 14 days.
