Over many years, a programme of improvement for Edinburgh’s high schools has been taking place. This is to increase capacity and improve facilities. Schools are prioritised on factors like capacity, projected school rolls, the condition of the buildings and the quality of existing accommodation. As a result, each ‘Wave’ of funding has been targeted at a particular set of schools and three Waves are now complete. The next Wave of funding is Wave4 and the high schools planned for improvement are Castlebrae, Currie and Trinity.