On the CS thread. http://community.tes.co.uk/forums/t/453363.aspx Surely science is a subject that should be taught by a qualified teacher? I seem to remember spending a reasonable amount of time studying how to teach it and going on courses after qualifying. But hey, if an HLTA can teach science to the whole school, why stop there? History, geography, the whole thing. Why have qualified teachers? It's only primary school - anyone with a few GCSEs can teach anything.