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
26.61
2025/26
Mainstream classes
18
2025/26
Largest class group
33
2025/26
Classes with 30+ pupils
9
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
490
16
30.62
34
13
2007/08
482
16
30.12
34
11
2008/09
488
16
30.50
32
15
2009/10
489
16
30.56
32
13
2010/11
490
16
30.62
33
13
2011/12
496
16
31.00
33
14
2012/13
494
16
30.88
33
14
2013/14
498
17
29.29
33
13
2014/15
503
18
27.94
33
12
2015/16
501
18
27.83
32
12
2016/17
493
18
27.39
32
11
2017/18
490
18
27.22
32
11
2019/20
493
18
27.39
32
10
2020/21
490
18
27.22
32
11
2021/22
482
18
26.78
32
10
2022/23
477
18
26.50
33
9
2023/24
481
18
26.72
34
9
2024/25
481
18
26.72
31
8
2025/26
479
18
26.61
33
9
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 219 in 1983/84 → 448, +229 pupils.
Biggest loss in a single year: 2002/03: 483 in 2001/02 → 471, -12 pupils.
Largest single-class increase: 3rd Class in 2023/24 (58 → 61, +3).
Largest single-class decrease: 3rd Class in 2021/22 (62 → 58, -4).
Largest cohort-step gain: 1st → 2nd in 2025/26 (59 → 61, +2).
Largest cohort-step loss: 2nd → 3rd in 2022/23 (60 → 58, -2).
Overall: 80 (1981/82) → 479 (2025/26), 399.
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
57
61
59.5
6
Senior Infants
59
61
60.3
6
1st Class
59
61
60.0
6
2nd Class
59
61
60.2
6
3rd Class
58
62
59.8
6
4th Class
58
62
60.3
6
5th Class
59
62
60.5
6
6th Class
59
64
61.0
6
Total
80
503
455.6
36
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).