Sewage has leaked into Scottish schools 88 times since 2019, according to figures obtained by the Scottish Liberal Democrats.
The freedom of information (FOI) data showed that 11 local authorities reported the sewage spills, including 26 leaks in South Lanarkshire, 15 in Renfrewshire, 14 in Stirling and 11 in the Highlands.
Meanwhile, five each were reported in Aberdeen, Argyll and Bute and in West Lothian, three in East Ayrshire, two in the Borders and one each in Clackmannanshire and East Renfrewshire.
Angus Council, the Western Isles, Perth and Kinross and Moray Council did not provide responses.
According to the data, all incidents in South Lanarkshire occurred in primary schools, while in Renfrewshire, one school had the same pipe burst into a kitchen three times in the space of a few weeks, while another school in the region logged concerns of dirty water from sewage seeping into classrooms.
In the Scottish Borders, the leaks occurred at one primary school with both spillages occurring in the dining area and main kitchen, according to the FOI responses.
The Scottish Liberal Democrats have been urging the Scottish Government to overhaul the sewage system after previous FOI data revealed seven health boards reported a total of 196 sewage leaks in hospitals.