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
26.25
2025/26
Mainstream classes
8
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
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
183
7
26.14
31
3
2007/08
199
7
28.43
34
3
2008/09
189
7
27.00
31
3
2009/10
208
7
29.71
32
4
2010/11
223
8
27.88
31
3
2011/12
228
8
28.50
32
3
2012/13
234
8
29.25
32
4
2013/14
230
9
25.56
30
1
2014/15
227
8
28.38
31
2
2015/16
223
8
27.88
32
2
2016/17
217
8
27.12
31
2
2017/18
216
8
27.00
31
1
2019/20
203
8
25.38
30
1
2020/21
201
8
25.12
28
0
2021/22
211
8
26.38
30
1
2022/23
213
8
26.62
29
0
2023/24
212
8
26.50
28
0
2024/25
207
8
25.88
28
0
2025/26
210
8
26.25
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2004/05: 148 in 2003/04 → 167, +19 pupils.
Biggest loss in a single year: 1995/96: 113 in 1994/95 → 103, -10 pupils.
Largest single-class increase: 1st Class in 2022/23 (21 → 29, +8).
Largest single-class decrease: 6th Class in 2022/23 (30 → 23, -7).
Largest cohort-step gain: SI → 1st in 2022/23 (22 → 29, +7).
Largest cohort-step loss: JI → SI in 2023/24 (28 → 26, -2).
Overall: 52 (1974/75) → 210 (2025/26), 158.
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
22
28
25.5
6
Senior Infants
21
28
24.3
6
1st Class
21
29
25.5
6
2nd Class
24
29
26.8
6
3rd Class
24
28
27.0
6
4th Class
23
30
26.5
6
5th Class
25
28
26.3
6
6th Class
23
30
27.0
6
Total
52
234
156.0
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).