Cardiff's Lib Dems have expressed concern at a jump in the number of exclusions in the city's secondary schools. In the academic year 2016/17, pupils were excluded for a total of 1989 days, an increase of 18% on the previous year.
Reasons for exclusion included assault and violence, bullying, damage to property, disruption, racial harassment, sexual harassment, substance misuse and theft.
There is a wide spread of exclusion rates across the city's schools from no exclusions at Bishop of Llandaf through to 341 at the now closed Michaelstone College. Cardiff High, held up as one of Wales' best schools, saw a significant jump in exclusions from 32 in 2015/16 to 74 in 2016/17.
"The leap in exclusions across the city is concerning," said Cllr Rhys Taylor, Lib Dem spokesperson for education.
"We need to understand more why this is happening, whether there are emerging patterns, whether our teachers and support staff have the support they need, and why there is such variation across our schools.
"We need to know whether the council have acted on this emerging trend.
"We need reassurance that the Central South Consortium, to whom we pay a significant amount of money to challenge and improve standards in our schools, is aware of the situation and are satisfied that the authority and its schools are doing everything they can to get on top of any problems.
"In the end, a school system with a high level of disruption and, indeed, violence will not be one in which learning can best take place."