Because they have found an unexploded bomb in the school grounds
It was found in their 'discovery' area where Lizzie and her friends were playing this morning. 2 of her friends found it outside the tent area that Lizzie was playing in. I am so glad they studied WW1 & 2 last term so they know not to touch it
The police were called and they evacuated the school and were waiting for bomb disposal to get there.