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
24.12
2025/26
Mainstream classes
17
2025/26
Largest class group
29
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
263
9
29.22
37
5
2007/08
345
13
26.54
30
2
2008/09
373
14
26.64
30
2
2009/10
381
13
29.31
34
6
2010/11
374
14
26.71
32
3
2011/12
398
14
28.43
35
3
2012/13
408
15
27.20
30
2
2013/14
434
16
27.12
30
2
2014/15
447
16
27.94
31
6
2015/16
443
16
27.69
31
6
2016/17
448
16
28.00
33
6
2017/18
450
17
26.47
32
5
2019/20
428
17
25.18
32
3
2020/21
415
16
25.94
31
1
2021/22
412
16
25.75
30
1
2022/23
433
17
25.47
31
5
2023/24
417
18
23.17
30
3
2024/25
415
17
24.41
32
4
2025/26
410
17
24.12
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 263 in 2006/07 → 345, +82 pupils.
Biggest loss in a single year: 2019/20: 450 in 2018/19 → 432, -18 pupils.
Largest single-class increase: 2nd Class in 2024/25 (47 → 67, +20).
Largest single-class decrease: 1st Class in 2024/25 (67 → 44, -23).
Largest cohort-step gain: SI → 1st in 2025/26 (41 → 49, +8).
Largest cohort-step loss: SI → 1st in 2021/22 (40 → 37, -3).
Overall: 133 (1993/94) → 422 (2025/26), 289.
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
40
58
45.5
6
Senior Infants
40
62
45.3
6
1st Class
37
67
50.2
6
2nd Class
45
67
52.5
6
3rd Class
45
68
54.7
6
4th Class
47
60
54.8
6
5th Class
53
60
56.8
6
6th Class
55
64
59.2
6
Total
107
450
301.2
33
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).