BubbSCrossley-HollandJCordinerJ, et al. (2019) Understanding the Middle Tier: comparative costs of academy and LA-maintained school systems. Available at: http://sarabubb.com/middle-tier/4594671314(accessed 8 July 2020).
2.
CourtneySJ (2015) Mapping school types in England. Oxford Review of Education49(6):799–818.