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
26.25
2025/26
Mainstream classes
24
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
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
515
19
27.11
31
3
2007/08
546
20
27.30
31
6
2008/09
579
21
27.57
32
5
2009/10
588
21
28.00
32
9
2010/11
569
21
27.10
31
7
2011/12
602
22
27.36
31
4
2012/13
590
22
26.82
30
2
2013/14
603
22
27.41
31
3
2014/15
636
23
27.65
32
2
2015/16
644
23
28.00
30
4
2016/17
641
24
26.71
30
2
2017/18
659
24
27.46
30
1
2019/20
638
24
26.58
30
2
2020/21
628
24
26.17
30
1
2021/22
616
24
25.67
29
0
2022/23
612
24
25.50
29
0
2023/24
615
24
25.62
28
0
2024/25
627
24
26.12
29
0
2025/26
630
24
26.25
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1983/84: 524 in 1982/83 → 592, +68 pupils.
Biggest loss in a single year: 1999/00: 586 in 1998/99 → 562, -24 pupils.
Largest single-class increase: 3rd Class in 2025/26 (73 → 88, +15).
Largest single-class decrease: 4th Class in 2021/22 (88 → 73, -15).
Largest cohort-step gain: JI → SI in 2025/26 (73 → 83, +10).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (81 → 78, -3).
Overall: 470 (1981/82) → 648 (2025/26), 178.
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
71
78
73.8
6
Senior Infants
72
83
75.5
6
1st Class
74
80
76.5
6
2nd Class
74
84
78.3
6
3rd Class
73
88
78.2
6
4th Class
73
88
79.3
6
5th Class
76
85
81.5
6
6th Class
75
88
81.3
6
Total
470
677
590.5
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).