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As the demand increases for statistics and data to measure the impact of the COVID-19 pandemic, we have had to change our data gathering and release practices, focussing efforts on priority analysis and statistics.

Data Provider: Welsh Government National Statistics Classes in primary, middle and secondary schools by local authority, region and year group

Classes running during the third period of the school’s timetable on Census day.

Category 1[Filter]
[Collapse]Key Stage[Filtered]
Key Stage 1[Filter]
Sector 1[Filter]
Area Code[Filter]
Welsh 1[Filter]
[Collapse]Year Group[Filter]
Year Group 1
LARegion 1
[Collapse]TotalClick here to sortTotal
Click here to sortNursery 1Click here to sortNursery 2Click here to sortReceptionClick here to sortYear Group 1Click here to sortYear Group 2Click here to sortYear Group 3Click here to sortYear Group 4Click here to sortYear Group 5Click here to sortYear Group 6Click here to sortYear Group 7Click here to sortYear Group 8Click here to sortYear Group 9Click here to sortYear Group 10Click here to sortYear Group 11Click here to sortYear Group 12Click here to sortYear Group 13Click here to sortYear Group 14Click here to sortMixed Year Groups
[Collapse]North Wales17416321259300271243243275612607625662696272279.2,5408,638
North WalesIsle of Anglesey.452513222317171956535362612220.286794
[Collapse]South West and Mid Wales105275431368459428376358421776747776854835321293.2,91610,739
South West and Mid WalesPowys124442241292418341071011101391196861.5671,509
Neath Port Talbot3351786075776152681331311351401372322.4691,745
[Collapse]Central South Wales62181644561627634585556617827839852909915425371.2,20511,810
Central South WalesBridgend2435907990908167801351341391421486879.3841,865
Vale of Glamorgan17271051021081081091091121291281261371328372.1991,803
Rhondda Cynon Taf97712889118127106105123225228226245249151119.8033,128
Merthyr Tydfil512282433292219355448485350...241701
[Collapse]South East Wales42124398333371353335326370515485493540558199197.1,4387,077
South East WalesCaerphilly19501017993928784981681591551861892219.6112,212
Blaenau Gwent99473945383432415048504953...178722


Classes in primary, secondary and middle schools by local authority, region and year group

Last update
11/06/2020 11/06/2020

Next update
July 2021

Publishing organisation
Welsh Government

Source 1
Pupil Level Annual School Census (PLASC), Welsh Government

Contact email

National Statistics

Lowest level of geographical disaggregation
Local authorities

Geographical coverage

Languages covered
English and Welsh

Data licensing
You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see

General description
See other items

Data collection and calculation
Schools’ data are derived from the Pupil Level Annual School Census (PLASC) returns and STATS 1 returns supplied by schools open on Census day in January each year. The returns are authorised by headteachers and validated by Local Authorities.

Frequency of publication

Data reference periods
From 2003/04 or more recently if the data item is not available for earlier years.

Rounding applied

Statistical quality
School Census returns are authorised by headteachers and validated by Local Authorities.

Whilst most of the usual data validation processes on the 2020 school census data have taken place, due to the coronavirus pandemic, the data did not undergo the usual final validation process. As part of the Welsh Local Government Finance Settlement, the data is usually returned to local authorities for final validation. Typically, overall numbers of pupils and teachers will not change significantly during this period, with the most likely change being in the characteristics of the pupils themselves e.g. free school meal entitlement. Users should therefore be more cautious when comparing data on characteristics of pupils and staff over time, in particular where small cohorts are involved.