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
23.38
2025/26
Mainstream classes
16
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
352
12
29.33
33
8
2007/08
384
14
27.43
31
3
2008/09
382
14
27.29
32
4
2009/10
385
14
27.50
33
4
2010/11
384
14
27.43
33
4
2011/12
380
14
27.14
34
5
2012/13
387
14
27.64
32
5
2013/14
387
14
27.64
31
4
2014/15
404
14
28.86
32
8
2015/16
402
15
26.80
30
3
2016/17
414
15
27.60
33
5
2017/18
424
16
26.50
31
2
2019/20
418
16
26.12
32
2
2020/21
414
16
25.88
32
2
2021/22
391
16
24.44
32
2
2022/23
372
16
23.25
28
0
2023/24
382
15
25.47
28
0
2024/25
380
16
23.75
27
0
2025/26
374
16
23.38
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 167 in 1982/83 → 263, +96 pupils.
Biggest loss in a single year: 1975/76: 121 in 1974/75 → 95, -26 pupils.
Largest single-class increase: Junior Infants in 2023/24 (38 → 50, +12).
Largest single-class decrease: Junior Infants in 2025/26 (53 → 39, -14).
Largest cohort-step gain: 5th → 6th in 2023/24 (47 → 52, +5).
Largest cohort-step loss: 5th → 6th in 2021/22 (62 → 59, -3).
Overall: 121 (1974/75) → 374 (2025/26), 253.
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
35
53
43.0
6
Senior Infants
36
55
46.0
6
1st Class
37
52
45.5
6
2nd Class
36
51
45.8
6
3rd Class
37
52
47.2
6
4th Class
47
58
50.5
6
5th Class
47
62
53.7
6
6th Class
49
59
53.8
6
Total
95
424
305.8
42
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).