Too many characters, none well developed, needs a dramatis personae....and a map/site plan. Who cares.... not I. Improbable plot! School attacked by gunmen, kids evacuated to beech in snowstorm......in Somerset!!, rescued off beech by boats!!??
Drones and helicopters, forensic psychologist cop, sorts it all out in minutes, baddies shot dead, while School rehearses Hamlet, all done before lunch. Are you still with me?