I have found further information on the government initiative to supply LFTs for families and support bubbles of school aged children. 

Members of households, childcare or support bubbles of school staff and pupils

This section does not apply to secondary school pupils, and primary and secondary school staff, who should take twice-weekly tests using home test kits provided by their school.

From 1 March 2021, if you’re a member of a household, childcare bubble or support bubble of staff or a pupil you can get a twice-weekly test:

• through your employer if they offer testing to employees
• at a local test site
• by collecting a home test kit from a test site
• by ordering a home test kit online
•  

Get a test through your employer

Your workplace may offer rapid lateral flow testing to you. Contact your employer to find out more.

Take a test at a rapid lateral flow test site

You can take a rapid lateral flow test at a local site. Testing at these sites is assisted, which means you will swab yourself under the supervision of a trained operator.

You may need to book an appointment.

Find your nearest rapid lateral flow test site. 

This information is in the public domain and has not been sent specifically to schools. It has been taken from: Rapid lateral flow testing for households and bubbles of school pupils and staff - GOV.UK (www.gov.uk)