Pupils in maintained schools taught Welsh as a first language by local authority, year group and year

Standard shorthand is used in this table: [c] = confidential information, [t] = total.

Data values	Data description	Year	Local authority	Year group
14.0	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 4
12.9	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 5
13.2	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 6
12.6	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 7
12.4	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 8
11.1	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 9
10.6	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 10
10.4	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 11
11.9	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 12
10.3	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Year Group 13
13.5 [t]	Percentage of pupils taught Welsh as a first language	2020/21	Vale of Glamorgan	Total
20.0	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Nursery
20.0	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Reception
20.7	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 1
18.8	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 2
19.0	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 3
17.9	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 4
17.4	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 5
17.1	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 6
19.4	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 7
20.0	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 8
19.5	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 9
18.3	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 10
18.4	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 11
19.6	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 12
21.6	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 13
[c]	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Year Group 14
19.1 [t]	Percentage of pupils taught Welsh as a first language	2020/21	Rhondda Cynon Taf	Total
11.9	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Nursery
13.9	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Reception
13.7	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 1
13.1	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 2
14.2	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 3
11.7	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 4
12.5	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 5
12.7	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 6
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 7
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 8
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 9
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 10
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Year Group 11
8.5 [t]	Percentage of pupils taught Welsh as a first language	2020/21	Merthyr Tydfil	Total
17.2	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Nursery
17.4	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Reception
17.8	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 1
16.9	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 2
18.0	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 3
17.0	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 4
15.7	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 5
16.9	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 6
15.5	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 7
15.5	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 8
16.9	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 9
15.3	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 10
14.8	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 11
26.4	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 12
20.4	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Year Group 13
16.8 [t]	Percentage of pupils taught Welsh as a first language	2020/21	Caerphilly	Total
1.9	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Nursery
4.6	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Reception
5.3	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 1
3.4	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 2
3.4	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 3
3.1	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 4
5.0	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 5
4.0	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 6
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 7
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 8
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 9
[c]	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 10
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Year Group 11
2.5 [t]	Percentage of pupils taught Welsh as a first language	2020/21	Blaenau Gwent	Total
12.9	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Nursery
11.6	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Reception
12.6	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 1
12.0	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 2
11.0	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 3
10.9	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 4
9.1	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 5
11.1	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 6
12.7	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 7
11.9	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 8
11.9	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 9
10.0	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 10
10.2	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 11
100.0	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 12
100.0	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 13
[c]	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Year Group 14
12.1 [t]	Percentage of pupils taught Welsh as a first language	2020/21	Torfaen	Total
15.2	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Nursery
6.5	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Reception
6.3	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Year Group 1
3.9	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Year Group 2
4.9	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Year Group 3
5.3	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Year Group 4
4.6	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Year Group 5
5.2	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Year Group 6
[c]	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Year Group 7
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Year Group 8
0.0	Percentage of pupils taught Welsh as a first language	2020/21	Monmouthshire	Year Group 9

Showing 14,501 to 14,600 of 16,125 rows

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Main information

• Most recent update: 18 September 2025
• Next update expected: July 2026
• Designation: Official statistics
• Data provider: Welsh Government
• Data source: Pupil Level Annual School Census (PLASC)
• Time period covered: September 2011 to August 2025

Data notes

• Rounding applied:

  Numbers are rounded to the nearest 5.

Overview

• Summary of dataset and variables:

  Data from the annual School Census which collects information on schools, pupils, classes, ethnicity, free school meal eligibility, additional learning needs and special educational needs.

• Data collection or calculation:

  The data in this report is collected by the Welsh Government from local authority maintained schools in a return called the Pupil Level Annual School Census (PLASC). PLASC is an electronic collection of pupil and school level data. Schools record data on pupils and the school throughout the year in their Management Information System (MIS) software. This data is collated into an electronic PLASC return and submitted to the Welsh Government through DEWI, a secure online data transfer system developed by the Welsh Government. Various stages of automated validation and sense-checking are built into the process to ensure a high quality of data to inform policy making and funding.

• Statistical quality:

  The returns are authorised by headteachers and validated by local authorities.

  The school census date is usually in January. Due to the level of coronavirus (COVID-19) cases in January 2022, the 2022 census date was delayed to 15 February 2022. School closures between December 2020 and March 2021 due to the coronavirus (COVID-19) pandemic meant that the 2021 census date was delayed to 20 April 2021.

  Pupils are eligible for free school meals if their parents or guardians are in receipt of certain means-tested benefits or support payments. The coronavirus (COVID-19) pandemic may have impacted on the quality of this data and may have resulted in over recording of this data in 2020 to 2022. These figures do not include pupils who only receive free schools meals due to the universal primary free school meal policy.

• Related reports:
  • Schools' census results

Published by

• Organisation: Welsh Government
• Contact email: school.stats@gov.wales

Metadata

The metadata for this dataset is not included when you download the data. You can download this separately. This contains all the information from the 'About this dataset' tab.