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
18.65
2025/26
Mainstream classes
23
2025/26
Largest class group
24
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
472
24
19.67
24
0
2007/08
521
26
20.04
24
0
2008/09
583
29
20.10
24
0
2009/10
619
29
21.34
24
0
2010/11
613
29
21.14
24
0
2011/12
635
29
21.90
25
0
2012/13
643
29
22.17
24
0
2013/14
641
27
23.74
25
0
2014/15
530
27
19.63
24
0
2015/16
536
26
20.62
24
0
2016/17
515
25
20.60
25
0
2017/18
507
25
20.28
24
0
2019/20
497
24
20.71
25
0
2020/21
483
24
20.12
26
0
2021/22
441
22
20.05
24
0
2022/23
459
24
19.12
26
0
2023/24
419
23
18.22
23
0
2024/25
421
23
18.30
23
0
2025/26
429
23
18.65
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 536 in 2007/08 → 597, +61 pupils.
Biggest loss in a single year: 2014/15: 641 in 2013/14 → 530, -111 pupils.
Largest single-class increase: Senior Infants in 2025/26 (34 → 59, +25).
Largest single-class decrease: Junior Infants in 2023/24 (48 → 29, -19).
Largest cohort-step gain: 1st → 2nd in 2022/23 (42 → 52, +10).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (61 → 54, -7).
Overall: 609 (1993/94) → 447 (2025/26), -162.
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
29
58
47.2
6
Senior Infants
34
59
46.5
6
1st Class
37
55
48.3
6
2nd Class
51
61
54.8
6
3rd Class
53
64
57.5
6
4th Class
54
77
61.5
6
5th Class
52
71
62.7
6
6th Class
63
76
67.5
6
Total
393
643
512.5
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).