Susan Calman asks the questions as the search continues for the UK's smartest school. In this heat Blaenavon Heritage Primary School from Torfaen take on Calside Primary School from Dumfries. Will one of them be top class?

In this heat Glengarnock Primary School from Ayrshire take on Wootten Wawan Church of England Primary School from Warwickshire. Will one of them be top class?

Susan Calman asks the questions as the search continues for the UK's smartest school. In this heat Sidlesham Primary School from West Sussex take on Delamere Church of England Academy from Cheshire. Will one of them be top class?