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
24.72
2025/26
Mainstream classes
18
2025/26
Largest class group
29
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
398
15
26.53
33
1
2007/08
425
16
26.56
32
1
2008/09
425
16
26.56
31
1
2009/10
402
16
25.12
29
0
2010/11
375
15
25.00
29
0
2011/12
393
14
28.07
34
5
2012/13
403
14
28.79
33
7
2013/14
438
16
27.38
34
7
2014/15
463
17
27.24
35
6
2015/16
471
17
27.71
32
5
2016/17
458
17
26.94
31
4
2017/18
450
17
26.47
31
4
2019/20
463
18
25.72
32
6
2020/21
448
18
24.89
30
2
2021/22
449
18
24.94
30
2
2022/23
461
18
25.61
31
1
2023/24
441
18
24.50
29
0
2024/25
442
18
24.56
30
2
2025/26
445
18
24.72
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2013/14: 403 in 2012/13 → 438, +35 pupils.
Biggest loss in a single year: 1999/00: 589 in 1998/99 → 517, -72 pupils.
Largest single-class increase: 4th Class in 2022/23 (52 → 60, +8).
Largest single-class decrease: 6th Class in 2023/24 (67 → 52, -15).
Largest cohort-step gain: JI → SI in 2023/24 (57 → 62, +5).
Largest cohort-step loss: 5th → 6th in 2023/24 (57 → 52, -5).
Overall: 636 (1993/94) → 463 (2025/26), -173.
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
52
57
55.5
6
Senior Infants
52
62
56.0
6
1st Class
52
59
54.8
6
2nd Class
53
59
56.0
6
3rd Class
52
61
56.2
6
4th Class
52
64
57.7
6
5th Class
53
63
58.2
6
6th Class
52
67
58.2
6
Total
389
661
482.6
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).