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
24.00
2025/26
Mainstream classes
18
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
181
7
25.86
32
2
2007/08
206
8
25.75
30
2
2008/09
213
8
26.62
36
4
2009/10
225
8
28.12
34
4
2010/11
250
9
27.78
34
3
2011/12
259
9
28.78
33
5
2012/13
281
10
28.10
33
4
2013/14
303
11
27.55
33
3
2014/15
339
12
28.25
34
3
2015/16
369
13
28.38
36
4
2016/17
400
15
26.67
33
2
2017/18
413
15
27.53
33
4
2019/20
441
16
27.56
33
4
2020/21
458
17
26.94
33
1
2021/22
442
18
24.56
29
0
2022/23
434
18
24.11
29
0
2023/24
432
18
24.00
29
0
2024/25
426
18
23.67
29
0
2025/26
432
18
24.00
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2014/15: 303 in 2013/14 → 339, +36 pupils.
Biggest loss in a single year: 1993/94: 140 in 1982/83 → 95, -45 pupils.
Largest single-class increase: 1st Class in 2024/25 (42 → 54, +12).
Largest single-class decrease: 5th Class in 2021/22 (69 → 54, -15).
Largest cohort-step gain: JI → SI in 2024/25 (48 → 56, +8).
Largest cohort-step loss: SI → 1st in 2023/24 (44 → 42, -2).
Overall: 126 (1975/76) → 432 (2025/26), 306.
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
42
51
46.2
6
Senior Infants
44
56
51.3
6
1st Class
42
59
52.0
6
2nd Class
47
59
54.2
6
3rd Class
50
62
56.0
6
4th Class
54
61
57.2
6
5th Class
54
69
59.5
6
6th Class
56
68
61.0
6
Total
90
458
227.9
41
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).