School-level annual school census: guide to submitting data
How independent schools must collect and submit data for the school-level annual school census (SLASC).
Applies to England
SLASC is an annual, statutory census that takes place every January. You must complete statutory censuses by law unless there鈥檚 a good reason not to.
SLASC collects the following information about registered independent schools:
- their contact details
- the number of pupils on the attendance register
- the number of teaching staff
- the courses of study
- the number of pupils with special educational needs (SEN)
- the number of pupils in local authority care
- annual fees
- details of accommodation
- the number of staff members who have joined or left since the last census
- the school鈥檚 proprietors
Do not confuse SLASC with the annual census, which also takes place in January each year.
Important dates
2025 census dates:
- census day: Thursday 16 January 2025
- deadline for submitting your data: Sunday 16 February 2025
Submit your data
You鈥檒l need to:
- register and log in with
- use COLLECT to submit your data
Contact your school or local authority approver if:
- you want to request a DfE Sign-in username or password so you can access COLLECT
- SLASC is not on the list of collections you can see in COLLECT
Get help using DfE Sign-in
If you do not know who your approver is, use the .
If you鈥檝e forgotten your password, use to reset it. You鈥檒l need to click 鈥楽tart now鈥� and then 鈥楩orgotten your password?鈥�.
We鈥檒l only be able to change the status of your data submission to 鈥榓uthorised鈥� once you鈥檝e cleared all errors in the data in COLLECT.
Census documents
The following technical document is available for software suppliers:
Do you need help?
Submitting data
Use the if you have any questions about your data. We aim to answer your question within 5 working days.
Feedback
Use the if you have any comments about our data collection service, including COLLECT and the helpdesk service.
Updates to this page
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We have corrected the deadline date for submitting your SLASC data to Sunday 16 February 2025.
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Updated important dates for 2025.
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Updated the important dates to show dates for the 2024 census.
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Updated SLASC 2022 guide is available.
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Updated the important dates to show dates for 2023 census. Updated a link to the 2023 version of the business and technical specification.
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Added link to: 'School level annual school census (SLASC) - registered independent schools 2022 Guide for completing the census'.
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Updated with the census dates for 2022.
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Added a link to the 'SLASC guide' which is guidance for independent schools to help them with the 2021 school level annual school census (SLASC) return.
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Added 2021 business and technical specification and 2021 census dates.
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Added link to the 'School-level annual school census 2020: guide'.
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Updated 'Important dates' section with the dates for 2020. Replaced 'business and technical specification' link with the new 'SLASC 2020: technical specification' page.
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Updated 'Submit your data section' and DfE Sign-in help links.
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Added link to the 2019 guide for the school-level annual school census (SLASC).
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Updated COLLECT link from secure access to DfE sign in.
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Added the new census dates for 2019 and a link to the 2019 business and technical specification.
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Link added to new school-level annual school census 2018: guide.
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Added the new census dates for 2018 and a link to the 2018 business and technical specification.
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Added link to 'School-level annual school census 2017: guide'
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Added link to new generic COLLECT guides for schools and local authorities.
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Added the new census dates for 2017 and a link to the 2017 business and technical specification.
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Added link to 'School-level annual school census 2016: COLLECT guide'.
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Updated the census deadlines for 2016. Added a link to the business and technical specification for registered independent schools.
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Added a link to the 'SLASC 2015: guide for independent schools and general hospital schools' document.
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Added a link to the 2015 COLLECT user guide.
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Updated the link to the technical guide and census deadlines for 2015.
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First published.