I think that sibling priority is essential at primary school level, but compeltely unnecessary at secondary school. My children will be at different schools as one will be at primary and one will be at secondary and I am sure we will cope.
Why is having two children at different secondaries any less doable than having a child at primary and a child at secondary? I find it unfair that a family can move into catchment of a top secondary, move out of area and still get sibbling priority. It is crazy that some children have to take a bus to school because they cannot get into the comprehensive that is walking distance of their house.
Secondary school children without special needs do not need mummy to take them to school. I feel that community secondary schools should just have a distance/ catchment criteria.