Around 50 senior pupils at Taylor High in New Stevenston were absent for the school's annual Patron's Day Mass last Friday afternoon, despite arriving for class in the morning.
Acting head teacher, Nicola Daley, said: "Regrettably, a small number of pupils ...opted to truant in the afternoon and miss the service. The pupils have been subject to school discipline as a consequence of their actions."
The service, hosted by the Bishop of Motherwell Joseph Toal, remembered the "invaluable contribution to the school community" made by two members of staff who died in May 2016.
Nicola Daley added: "The theme for the celebration was Saint Teresa of Calcutta (formerly Mother Teresa) and highlighted her work with the poor.