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
24.22
2025/26
Mainstream classes
9
2025/26
Largest class group
33
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
208
7
29.71
34
4
2007/08
222
8
27.75
36
2
2008/09
224
8
28.00
36
3
2009/10
225
8
28.12
33
3
2010/11
225
8
28.12
33
3
2011/12
219
8
27.38
33
3
2012/13
214
8
26.75
33
2
2013/14
207
8
25.88
32
2
2014/15
190
8
23.75
29
0
2015/16
186
7
26.57
33
2
2016/17
194
7
27.71
33
2
2017/18
190
7
27.14
32
2
2019/20
206
8
25.75
31
2
2020/21
206
8
25.75
30
1
2021/22
225
8
28.12
36
3
2022/23
228
9
25.33
31
2
2023/24
233
9
25.89
33
2
2024/25
232
9
25.78
32
2
2025/26
218
9
24.22
33
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1998/99: 168 in 1997/98 → 193, +25 pupils.
Biggest loss in a single year: 1993/94: 191 in 1983/84 → 169, -22 pupils.
Largest single-class increase: Senior Infants in 2022/23 (26 → 36, +10).
Largest single-class decrease: 2nd Class in 2025/26 (37 → 23, -14).
Largest cohort-step gain: SI → 1st in 2022/23 (26 → 29, +3).
Largest cohort-step loss: 2nd → 3rd in 2025/26 (37 → 34, -3).
Overall: 224 (1974/75) → 218 (2025/26), -6.
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
21
36
26.7
6
Senior Infants
23
36
27.7
6
1st Class
24
37
28.2
6
2nd Class
23
37
28.0
6
3rd Class
25
34
29.7
6
4th Class
25
33
28.8
6
5th Class
24
31
28.0
6
6th Class
20
32
26.7
6
Total
164
242
205.9
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).