Should our children be in streamed classes?

Do you think children should be sorted into classes based on academic ability? A recent study from the UK says streaming is beneficial - but with some big caveats. Proponents say it's great for pushing the kids in high classes, but objectors say it means kids in the lower levels don't get the chance to reach their potential. Joining us to talk through the pros and cons is University of Canterbury's senior lecturer David Pomeroy.