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
24.42
2025/26
Mainstream classes
24
2025/26
Largest class group
26
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
46
2
23.00
26
0
2007/08
75
3
25.00
31
1
2008/09
103
4
25.75
31
1
2009/10
156
6
26.00
31
2
2010/11
213
8
26.62
37
2
2011/12
267
10
26.70
32
4
2012/13
295
11
26.82
32
3
2013/14
350
13
26.92
33
2
2014/15
375
14
26.79
33
2
2015/16
426
16
26.62
30
1
2016/17
475
18
26.39
31
2
2017/18
516
19
27.16
30
4
2019/20
578
22
26.27
30
3
2020/21
604
23
26.26
31
3
2021/22
601
23
26.13
30
3
2022/23
610
24
25.42
29
0
2023/24
601
24
25.04
28
0
2024/25
596
24
24.83
27
0
2025/26
586
24
24.42
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2010/11: 156 in 2009/10 → 213, +57 pupils.
Biggest loss in a single year: 2025/26: 596 in 2024/25 → 586, -10 pupils.
Largest single-class increase: 5th Class in 2021/22 (52 → 90, +38).
Largest single-class decrease: 6th Class in 2021/22 (75 → 50, -25).
Largest cohort-step gain: 1st → 2nd in 2021/22 (77 → 82, +5).
Largest cohort-step loss: SI → 1st in 2022/23 (82 → 74, -8).
Overall: 20 (2005/06) → 586 (2025/26), 566.
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
73
82
76.2
6
Senior Infants
68
82
74.8
6
1st Class
69
77
73.3
6
2nd Class
73
82
77.0
6
3rd Class
71
77
74.3
6
4th Class
74
91
77.8
6
5th Class
52
90
74.0
6
6th Class
50
86
72.2
6
Total
20
610
382.1
21
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).