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
23.50
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
406
14
29.00
34
7
2007/08
421
15
28.07
33
4
2008/09
435
16
27.19
32
3
2009/10
431
16
26.94
31
3
2010/11
428
16
26.75
31
1
2011/12
433
16
27.06
30
1
2012/13
443
16
27.69
31
5
2013/14
433
16
27.06
30
2
2014/15
430
16
26.88
30
2
2015/16
428
16
26.75
32
3
2016/17
418
16
26.12
32
2
2017/18
432
16
27.00
32
5
2019/20
437
17
25.71
29
0
2020/21
435
17
25.59
29
0
2021/22
405
16
25.31
29
0
2022/23
402
16
25.12
29
0
2023/24
389
16
24.31
29
0
2024/25
384
16
24.00
28
0
2025/26
376
16
23.50
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2003/04: 313 in 2002/03 → 355, +42 pupils.
Biggest loss in a single year: 2021/22: 435 in 2020/21 → 405, -30 pupils.
Largest single-class increase: Junior Infants in 2024/25 (43 → 49, +6).
Largest single-class decrease: Junior Infants in 2021/22 (55 → 41, -14).
Largest cohort-step gain: SI → 1st in 2025/26 (44 → 48, +4).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (56 → 52, -4).
Overall: 137 (1974/75) → 376 (2025/26), 239.
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
36
55
44.3
6
Senior Infants
42
54
46.8
6
1st Class
41
55
47.8
6
2nd Class
43
56
50.0
6
3rd Class
43
52
50.3
6
4th Class
49
53
51.2
6
5th Class
49
56
52.2
6
6th Class
51
68
55.8
6
Total
137
443
319.2
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).