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
24.04
2025/26
Mainstream classes
24
2025/26
Largest class group
27
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
594
22
27.00
34
4
2007/08
549
22
24.95
32
5
2008/09
546
20
27.30
35
7
2009/10
602
23
26.17
32
2
2010/11
625
24
26.04
32
3
2011/12
654
24
27.25
31
5
2012/13
659
24
27.46
31
5
2013/14
668
24
27.83
30
7
2014/15
675
24
28.12
30
7
2015/16
672
25
26.88
30
5
2016/17
679
25
27.16
31
7
2017/18
670
26
25.77
31
5
2019/20
617
25
24.68
31
1
2020/21
606
24
25.25
30
2
2021/22
605
24
25.21
30
2
2022/23
585
24
24.38
27
0
2023/24
582
24
24.25
27
0
2024/25
580
24
24.17
27
0
2025/26
577
24
24.04
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 826 in 1974/75 → 911, +85 pupils.
Biggest loss in a single year: 1979/80: 973 in 1978/79 → 760, -213 pupils.
Largest single-class increase: Senior Infants in 2021/22 (69 → 80, +11).
Largest single-class decrease: 2nd Class in 2021/22 (75 → 65, -10).
Largest cohort-step gain: 4th → 5th in 2025/26 (70 → 74, +4).
Largest cohort-step loss: JI → SI in 2025/26 (75 → 71, -4).
Overall: 826 (1974/75) → 589 (2025/26), -237.
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
82
75.8
6
Senior Infants
69
80
73.7
6
1st Class
63
78
72.0
6
2nd Class
65
77
72.3
6
3rd Class
65
77
72.3
6
4th Class
67
79
73.0
6
5th Class
67
86
75.0
6
6th Class
71
86
77.0
6
Total
567
973
679.4
43
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).