I am a new deputy head looking at union membership. The NAHT is charging £264 a year, compared to the NUT who charges £166. The NAHT offers people on the leadership scale their 'Headway' monthly publication and I can't see any other difference. Is this worth the extra £100 a year or is there something I'm missing? Up until this point I've not been in a union but think that the time has come now that my responsibilities are so much greater and the politics of teaching affects what I do, and how my colleagues and pupils are affected, on a greater scale. I'd really appreciate your thoughts.