A zombie invasion is always a misfortune – but when it happens alongside an Ofsted inspection, it's nothing short of a disaster. In A Teacher’s Guide to Surviving Zombie Armageddon, a year-three teacher phlegmatically soldiers on through the apocalypse, all the time trying to follow best educational practice while her pupils turn into the undead.

Actor Rachel Tudor, herself an experienced primary school-teacher, has a slightly frazzled demeanour down to a tee. A new child is introduced to the class; the teacher is warned that Natasha is a scratcher, a biter and a kicker, but at least she’s got no emotional disorders. It’s no surprise what Natasha is going to unleash, and soon our valiant teacher is struggling to keep a lid on the children while coping with zombie chaos.

As the invasion progresses, Tudor has lots of fun linking it with the policies and jargon of modern schooling – coping with the extra paperwork for a biting incident in class, and wondering how to implement good behaviour management techniques when the subjects are undead. It has its advantages of course; there is less conflict during football, since the kids all just chase after the ball in one great ravening horde.

I liked the way that different children were introduced, though perhaps more differentiation in their voices would have helped. I particularly enjoyed Lily, the seven-year-old whose age-inappropriate movie-watching comes in handy. “Garlic bread won’t work, Miss, that’s for Vampires, you need salt for zombies” – good advice, but finding salt in a “Healthy School” is easier said than done.

There are three main strands of humour here: the bureaucracy of primary-school teaching, the comparisons between children and zombies, and the descent into Zombie Armageddon itself. Tudor does indeed find comedy in all of them, but it's weighted too much towards school politics and policies. I wonder how well it travels beyond those that don’t work in a school or have school-age kids – though for those in the know, it's very funny and well done.

The plot inevitably takes a back seat in a piece like this, but the explanation of why the school has been infected and how the teacher survives is rather rushed towards the end. It’s funny and clever, and deserves more of a role in the play. Still, A Teacher’s Guide to Surviving Zombie Armageddon is great fun – you won't regret stepping into the chaos. Just as long as you don’t get bitten!