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
22.53
2025/26
Mainstream classes
17
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
411
15
27.40
30
2
2007/08
415
15
27.67
29
0
2008/09
423
16
26.44
28
0
2009/10
459
17
27.00
29
0
2010/11
463
17
27.24
29
0
2011/12
477
18
26.50
30
1
2012/13
529
19
27.84
30
6
2013/14
560
20
28.00
31
9
2014/15
559
20
27.95
30
9
2015/16
556
20
27.80
30
8
2016/17
563
21
26.81
30
7
2017/18
552
21
26.29
30
7
2019/20
523
21
24.90
30
5
2020/21
497
20
24.85
30
3
2021/22
435
20
21.75
30
1
2022/23
433
18
24.06
30
2
2023/24
419
18
23.28
29
0
2024/25
387
18
21.50
25
0
2025/26
383
17
22.53
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2012/13: 477 in 2011/12 → 529, +52 pupils.
Biggest loss in a single year: 2021/22: 509 in 2020/21 → 447, -62 pupils.
Largest single-class increase: Junior Infants in 2025/26 (40 → 73, +33).
Largest single-class decrease: 6th Class in 2021/22 (95 → 59, -36).
Largest cohort-step gain: JI → SI in 2025/26 (40 → 47, +7).
Largest cohort-step loss: SI → 1st in 2022/23 (56 → 51, -5).
Overall: 169 (1993/94) → 413 (2025/26), 244.
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
37
73
49.8
6
Senior Infants
40
56
46.0
6
1st Class
44
54
47.5
6
2nd Class
42
60
49.7
6
3rd Class
40
69
53.8
6
4th Class
47
66
56.7
6
5th Class
46
68
59.0
6
6th Class
59
95
68.2
6
Total
163
569
395.7
33
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).