Here are links to other useful / related sites
Connect is an Australian bi-monthly practice journal supporting active student participation. Edited by Roger Holdsworth, Connect has been published since 1979 and can be downloaded free of charge. Good student voice resources including some for School Councils.
Adam Fletcher is a consultant on Youth Engagement and Social Change. He generously shares research and resources and his website is full of goodies to help youth to change the world.
Student Voice Research and Practice is a Facebook group for anyone to share ongoing research, questions, thoughts, information about student voice and related activities such as pupil consultation, youth-adult partnerships, child participation and the like.