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
24.35
2025/26
Mainstream classes
17
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
3
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
383
14
27.36
32
5
2007/08
416
15
27.73
31
5
2008/09
425
15
28.33
31
6
2009/10
430
15
28.67
33
7
2010/11
438
16
27.38
31
3
2011/12
436
16
27.25
30
5
2012/13
434
16
27.12
32
3
2013/14
448
16
28.00
31
6
2014/15
441
16
27.56
30
6
2015/16
448
16
28.00
31
5
2016/17
447
16
27.94
31
4
2017/18
441
17
25.94
31
1
2019/20
442
17
26.00
31
3
2020/21
442
17
26.00
31
5
2021/22
443
18
24.61
30
2
2022/23
432
18
24.00
31
2
2023/24
442
18
24.56
31
1
2024/25
414
18
23.00
30
2
2025/26
414
17
24.35
31
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2004/05: 274 in 2003/04 → 322, +48 pupils.
Biggest loss in a single year: 2024/25: 454 in 2023/24 → 426, -28 pupils.
Largest single-class increase: Junior Infants in 2023/24 (44 → 62, +18).
Largest single-class decrease: Junior Infants in 2024/25 (62 → 31, -31).
Largest cohort-step gain: SI → 1st in 2025/26 (59 → 65, +6).
Largest cohort-step loss: JI → SI in 2024/25 (62 → 59, -3).
Overall: 139 (1974/75) → 426 (2025/26), 287.
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
31
62
47.8
6
Senior Infants
34
59
49.7
6
1st Class
47
65
54.3
6
2nd Class
51
58
54.3
6
3rd Class
51
59
56.0
6
4th Class
53
59
56.7
6
5th Class
51
60
57.8
6
6th Class
51
60
57.0
6
Total
139
459
321.8
42
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).