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
21.10
2025/26
Mainstream classes
21
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+
2007/08
27
2
13.50
14
0
2008/09
77
4
19.25
22
0
2009/10
134
6
22.33
27
0
2010/11
180
7
25.71
27
0
2011/12
249
10
24.90
27
0
2012/13
308
12
25.67
34
2
2013/14
371
15
24.73
32
4
2014/15
457
18
25.39
34
5
2015/16
516
20
25.80
34
5
2016/17
544
21
25.90
33
5
2017/18
583
23
25.35
33
2
2019/20
593
24
24.71
29
0
2020/21
563
24
23.46
29
0
2021/22
535
24
22.29
28
0
2022/23
517
23
22.48
28
0
2023/24
488
23
21.22
26
0
2024/25
470
22
21.36
27
0
2025/26
443
21
21.10
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2014/15: 402 in 2013/14 → 492, +90 pupils.
Biggest loss in a single year: 2021/22: 599 in 2020/21 → 568, -31 pupils.
Largest single-class increase: 2nd Class in 2025/26 (43 → 66, +23).
Largest single-class decrease: Senior Infants in 2021/22 (75 → 44, -31).
Largest cohort-step gain: 5th → 6th in 2025/26 (64 → 75, +11).
Largest cohort-step loss: SI → 1st in 2021/22 (75 → 73, -2).
Overall: 28 (2007/08) → 480 (2025/26), 452.
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
39
56
48.7
6
Senior Infants
41
75
54.5
6
1st Class
43
73
56.0
6
2nd Class
43
77
61.8
6
3rd Class
48
77
64.0
6
4th Class
53
83
71.0
6
5th Class
64
82
76.8
6
6th Class
68
83
77.0
6
Total
28
629
430.8
19
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).