The Allentown Morning Call reports Pennridge Superintendent Jacqueline Rattingan announced the punishment Wednesday against the 225 Pennridge High School students who walked out of school instead of attending an in-house assembly remembering the 17 killed at Marjory Stoneman Douglas High School in Florida.
The students will serve their detentions Saturday.
The school had previously warned students who left the school without their parents would face discipline.
Rattigan says about 800 students attended the assembly, which included a slideshow in honor of the victims.
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