The following table shows the requested data. 2021-2022 is the most recent year we have published data for on the DE website. Class data, including average class size, for the academic year 2022-23 will be available in June 2023.
This figure is based on mainstream classes in mainstream schools and are collated from the relevant Class Size tables published on the DES website and can be found at the link below;
www.gov.ie/en/collection/class-size-information-at-individual-primary-school-level/.
In post-primary schools pupil enrolments vary by subject and so the concept of average class size does not apply. Furthermore enrolments of pupils per subject is available at a school level only so average class size per subject is not available.
Local Authority
|
Ave. Class Size 2017
|
Ave. Class Size 2018
|
Ave. Class Size 2019
|
Ave. Class Size 2020
|
Ave. Class Size 2021
|
Carlow County Council
|
25.6
|
25.1
|
25.0
|
23.8
|
23.9
|
Cavan County Council
|
23.8
|
23.8
|
23.3
|
22.7
|
22.0
|
Clare County Council
|
23.1
|
23.1
|
22.9
|
22.2
|
21.4
|
Cork City Council
|
22.5
|
22.4
|
22.3
|
21.6
|
21.4
|
Cork County Council
|
25.0
|
24.9
|
24.5
|
23.5
|
22.9
|
Donegal County Council
|
23.4
|
23.2
|
22.7
|
22.2
|
21.6
|
Dublin City Council
|
23.2
|
23.1
|
23.0
|
22.5
|
22.0
|
Dun Laoghaire Rathdown
|
26.5
|
26.1
|
25.6
|
24.8
|
24.3
|
Fingal County Council
|
26.4
|
26.2
|
25.8
|
25.5
|
24.9
|
Galway City Council
|
23.3
|
23.6
|
22.9
|
22.7
|
22.4
|
Galway County Council
|
23.5
|
23.4
|
23.1
|
22.2
|
21.7
|
Kerry County Council
|
24.1
|
23.7
|
23.2
|
22.0
|
21.4
|
Kildare County Council
|
25.7
|
25.5
|
25.3
|
24.7
|
24.3
|
Kilkenny County Council
|
24.9
|
24.8
|
24.6
|
23.3
|
22.9
|
Laois County Council
|
24.3
|
24.5
|
24.1
|
23.2
|
22.6
|
Leitrim County Council
|
23.7
|
23.4
|
23.8
|
22.3
|
21.6
|
Limerick City and County Council
|
24.6
|
24.3
|
23.9
|
23.1
|
22.7
|
Longford County Council
|
23.5
|
23.4
|
22.8
|
21.2
|
20.6
|
Louth County Council
|
25.5
|
24.9
|
24.7
|
24.2
|
23.5
|
Mayo County Council
|
22.3
|
22.1
|
22.0
|
20.9
|
21.0
|
Meath County Council
|
26.1
|
25.6
|
25.5
|
24.6
|
23.9
|
Monaghan County Council
|
24.6
|
24.4
|
24.3
|
23.3
|
23.2
|
Offaly County Council
|
24.0
|
23.8
|
23.7
|
22.8
|
22.0
|
Roscommon County Council
|
21.9
|
22.2
|
22.7
|
21.5
|
21.9
|
Sligo County Council
|
23.4
|
23.6
|
23.0
|
22.6
|
21.8
|
South Dublin County Council
|
25.0
|
24.7
|
24.5
|
24.1
|
23.7
|
Tipperary County Council
|
23.7
|
23.7
|
23.4
|
22.1
|
22.0
|
Waterford City and County Council
|
24.9
|
24.6
|
24.0
|
23.4
|
23.2
|
Westmeath County Council
|
24.8
|
24.5
|
24.4
|
23.3
|
23.2
|
Wexford County Council
|
24.8
|
24.6
|
24.5
|
22.9
|
22.2
|
Wicklow County Council
|
25.4
|
25.1
|
24.8
|
24.1
|
23.6
|