LAWRENCE. (AP) – Students at a northeast Kansas high school could be spending a few more minutes in class each day through the end of the school year to make up a day lost to a bomb threat.

Free State High School in Lawrence was evacuated just before the start of classes on Dec. 1 when the bomb threat was discovered. All classes were canceled, meaning the school day never officially began.

The Lawrence Journal-World reports the cancellation cost Free State nearly five hours toward the state’s yearly requirement. Superintendent Rick Doll is proposing to make up the lost time by lengthening classes a few minutes each day starting Jan. 5 for Free State’s more than 1,500 students.