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
20.50
2025/26
Mainstream classes
14
2025/26
Largest class group
28
2025/26
Classes with 30+ pupils
0
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
268
10
26.80
33
4
2007/08
271
10
27.10
33
3
2008/09
295
11
26.82
33
2
2009/10
317
12
26.42
33
2
2010/11
331
13
25.46
31
2
2011/12
327
13
25.15
30
2
2012/13
304
13
23.38
29
0
2013/14
323
13
24.85
30
2
2014/15
317
14
22.64
30
1
2015/16
328
14
23.43
31
2
2016/17
317
14
22.64
31
1
2017/18
308
13
23.69
30
2
2019/20
297
13
22.85
30
2
2020/21
299
13
23.00
29
0
2021/22
291
13
22.38
29
0
2022/23
278
13
21.38
27
0
2023/24
281
13
21.62
27
0
2024/25
300
13
23.08
28
0
2025/26
287
14
20.50
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1981/82: 204 in 1980/81 → 232, +28 pupils.
Biggest loss in a single year: 2012/13: 342 in 2011/12 → 320, -22 pupils.
Largest single-class increase: 1st Class in 2025/26 (23 → 51, +28).
Largest single-class decrease: 5th Class in 2022/23 (42 → 27, -15).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (37 → 42, +5).
Largest cohort-step loss: JI → SI in 2021/22 (38 → 36, -2).
Overall: 185 (1975/76) → 317 (2025/26), 132.
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
25
44
35.8
6
Senior Infants
23
46
35.8
6
1st Class
23
51
36.7
6
2nd Class
25
40
34.8
6
3rd Class
29
42
37.3
6
4th Class
29
42
37.8
6
5th Class
27
42
37.3
6
6th Class
27
43
38.8
6
Total
181
353
273.2
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).