Now the UK has left the EU, you need to be aware about what happens next in regard to the way your data is processed. The work schools have been doing to comply with the GDPR, will continue to be relevant.
ICO and DfE both confirm that the use of data processors in the EU, Iceland, Liechtenstein and Norway will carry on as normal during the Brexit transition period and that schools should continue their work of reviewing their data processors.
The advice from the Information Commissions Office is common to all the UK and is general for all organisations, not just schools.
The Education Data Matters group will keep you informed so please visit this page regularly.