Mainstream class group data is shown separately from standard/year-group enrolment data. The source does not identify which standard/year group each class group belongs to.
Average class size
23.89
2025/26
Mainstream classes
9
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
3
2025/26
Class group metrics trend
Class group metrics by year
Year
Mainstream class pupils
Mainstream classes
Average class size
Largest class
Classes 30+
2006/07
151
6
25.17
29
0
2007/08
153
6
25.50
29
0
2008/09
178
7
25.43
31
2
2009/10
179
7
25.57
31
1
2010/11
180
7
25.71
36
1
2011/12
182
8
22.75
28
0
2012/13
186
7
26.57
29
0
2013/14
197
7
28.14
38
1
2014/15
211
8
26.38
30
1
2015/16
224
8
28.00
31
3
2016/17
218
8
27.25
31
2
2017/18
219
8
27.38
32
2
2019/20
223
8
27.88
31
2
2020/21
221
8
27.62
31
3
2021/22
223
8
27.88
32
3
2022/23
231
8
28.88
32
5
2023/24
227
9
25.22
32
3
2024/25
217
9
24.11
31
3
2025/26
215
9
23.89
31
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2001/02: 112 in 2000/01 → 138, +26 pupils.
Biggest loss in a single year: 1993/94: 122 in 1983/84 → 99, -23 pupils.
Largest single-class increase: 5th Class in 2022/23 (22 → 32, +10).
Largest single-class decrease: 4th Class in 2023/24 (32 → 21, -11).
Largest cohort-step gain: 3rd → 4th in 2022/23 (29 → 32, +3).
Largest cohort-step loss: 4th → 5th in 2021/22 (26 → 22, -4).
Overall: 53 (1974/75) → 215 (2025/26), 162.
Summary statistics (class-level data)
Min / max / mean enrolment per class across the available final by-standard years.
Class
Min
Max
Mean
Years
Junior Infants
20
30
26.5
6
Senior Infants
20
32
27.7
6
1st Class
22
32
28.0
6
2nd Class
22
31
28.7
6
3rd Class
21
31
28.2
6
4th Class
21
32
28.5
6
5th Class
21
32
27.7
6
6th Class
23
32
27.2
6
Total
53
231
150.3
43
Total enrolment over time
Total and gender trends use historical records where available. Class-level data starts in 2020/21.
Enrolment by gender over time
Enrolment by class over time
Cohort progression
Track how each cohort (pupils who were in the same class in the same year) progresses through the school. Each step shows the count; the number between steps is the net change (pupils gained minus pupils lost).