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
25.25
2025/26
Mainstream classes
8
2025/26
Largest class group
34
2025/26
Classes with 30+ pupils
2
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
206
7
29.43
32
5
2007/08
207
8
25.88
33
2
2008/09
208
8
26.00
33
2
2009/10
221
8
27.62
33
3
2010/11
232
8
29.00
35
4
2011/12
233
9
25.89
33
1
2012/13
245
9
27.22
33
3
2013/14
247
9
27.44
29
0
2014/15
254
9
28.22
31
2
2015/16
263
9
29.22
33
2
2016/17
257
10
25.70
28
0
2017/18
259
10
25.90
28
0
2019/20
252
10
25.20
29
0
2020/21
250
10
25.00
31
3
2021/22
244
10
24.40
31
2
2022/23
237
10
23.70
28
0
2023/24
218
10
21.80
27
0
2024/25
201
9
22.33
31
1
2025/26
202
8
25.25
34
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2002/03: 142 in 2001/02 → 167, +25 pupils.
Biggest loss in a single year: 1993/94: 233 in 1983/84 → 179, -54 pupils.
Largest single-class increase: Junior Infants in 2025/26 (19 → 34, +15).
Largest single-class decrease: 1st Class in 2022/23 (33 → 20, -13).
Largest cohort-step gain: JI → SI in 2025/26 (19 → 23, +4).
Largest cohort-step loss: SI → 1st in 2024/25 (27 → 23, -4).
Overall: 169 (1974/75) → 214 (2025/26), 45.
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
16
34
23.8
6
Senior Infants
14
31
23.5
6
1st Class
15
33
24.5
6
2nd Class
20
34
28.0
6
3rd Class
20
36
28.7
6
4th Class
21
35
29.3
6
5th Class
31
39
33.5
6
6th Class
32
42
36.0
6
Total
127
263
204.0
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).