3. The teacher was told they needed to get their things together and leave the premises by 2:00 PM.
I would use:
3. The teacher was told to 'Kindly put your affairs and personal belongings in order, and leave the premises by 2:00 PM.'
I would use:
3. The teacher was told to 'Kindly put your affairs and personal belongings in order, and leave the premises by 2:00 PM.'