While I agree with Andreas Schleicher that collaboration is key ("Collaborative culture is the key to success", Comment, 8 March), we can also learn from examples closer to home.
Our heads have great autonomy over how their schools are run, but the Girls' Day School Trust (GSDT) is committed to optimising the benefits of being a group of 26 high-performing schools and academies in a variety of ways - from sharing resources to using the power of collaboration to further teachers' professional development. This year, we are piloting a subject champion initiative, designed to help teachers from a selection of subjects share best practice and teaching resources via an internal digital platform. This has been such a success that we are looking to roll it out for all subjects taught in our schools from September. Working collaboratively is vital to support the changes that are taking place in today's education system.
Helen Fraser, Chief executive of the Girls' Day School Trust.