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
24.00
2025/26
Mainstream classes
16
2025/26
Largest class group
28
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
468
16
29.25
31
8
2007/08
454
16
28.38
32
5
2008/09
450
16
28.12
31
5
2009/10
446
16
27.88
31
6
2010/11
446
16
27.88
31
5
2011/12
449
16
28.06
31
7
2012/13
444
16
27.75
31
4
2013/14
443
16
27.69
30
4
2014/15
445
16
27.81
30
3
2015/16
438
16
27.38
30
2
2016/17
447
16
27.94
30
2
2017/18
447
16
27.94
30
2
2019/20
434
16
27.12
29
0
2020/21
413
16
25.81
29
0
2021/22
416
16
26.00
29
0
2022/23
406
16
25.38
27
0
2023/24
390
16
24.38
27
0
2024/25
389
16
24.31
27
0
2025/26
384
16
24.00
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 410 in 1974/75 → 466, +56 pupils.
Biggest loss in a single year: 2020/21: 434 in 2019/20 → 413, -21 pupils.
Largest single-class increase: 5th Class in 2025/26 (42 → 52, +10).
Largest single-class decrease: 5th Class in 2024/25 (52 → 42, -10).
Largest cohort-step gain: 1st → 2nd in 2021/22 (45 → 49, +4).
Largest cohort-step loss: 5th → 6th in 2023/24 (49 → 44, -5).
Overall: 410 (1974/75) → 384 (2025/26), -26.
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
44
52
48.8
6
Senior Infants
46
54
50.5
6
1st Class
45
54
49.5
6
2nd Class
48
53
50.8
6
3rd Class
47
56
50.7
6
4th Class
46
54
50.3
6
5th Class
42
55
50.7
6
6th Class
42
52
48.3
6
Total
384
577
476.7
43
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).