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
23.80
2025/26
Mainstream classes
25
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
656
24
27.33
31
3
2007/08
642
24
26.75
31
4
2008/09
619
24
25.79
30
1
2009/10
608
24
25.33
31
1
2010/11
584
23
25.39
30
2
2011/12
589
23
25.61
32
2
2012/13
576
22
26.18
32
5
2013/14
582
22
26.45
32
5
2014/15
564
21
26.86
32
5
2015/16
547
21
26.05
32
6
2016/17
568
22
25.82
32
6
2017/18
599
23
26.04
32
5
2019/20
619
24
25.79
34
3
2020/21
611
24
25.46
34
3
2021/22
578
25
23.12
26
0
2022/23
591
25
23.64
27
0
2023/24
613
25
24.52
29
0
2024/25
601
25
24.04
28
0
2025/26
595
25
23.80
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1976/77: 556 in 1975/76 → 595, +39 pupils.
Biggest loss in a single year: 1993/94: 642 in 1982/83 → 581, -61 pupils.
Largest single-class increase: Senior Infants in 2025/26 (64 → 81, +17).
Largest single-class decrease: Senior Infants in 2024/25 (79 → 64, -15).
Largest cohort-step gain: 5th → 6th in 2023/24 (68 → 79, +11).
Largest cohort-step loss: JI → SI in 2021/22 (72 → 69, -3).
Overall: 556 (1975/76) → 615 (2025/26), 59.
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
65
80
72.0
6
Senior Infants
64
81
72.3
6
1st Class
68
79
74.2
6
2nd Class
70
78
75.0
6
3rd Class
66
79
74.2
6
4th Class
66
84
74.7
6
5th Class
68
82
76.2
6
6th Class
75
97
83.0
6
Total
556
714
629.3
41
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).