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
22.85
2025/26
Mainstream classes
20
2025/26
Largest class group
32
2025/26
Classes with 30+ pupils
1
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
309
11
28.09
36
5
2007/08
350
13
26.92
36
4
2008/09
367
14
26.21
35
4
2009/10
379
14
27.07
33
4
2010/11
378
14
27.00
32
5
2011/12
380
14
27.14
33
7
2012/13
386
14
27.57
32
5
2013/14
384
14
27.43
35
5
2014/15
389
14
27.79
34
4
2015/16
416
15
27.73
34
4
2016/17
422
16
26.38
34
2
2017/18
415
16
25.94
29
0
2019/20
432
17
25.41
31
4
2020/21
440
17
25.88
31
1
2021/22
451
18
25.06
30
5
2022/23
473
19
24.89
31
4
2023/24
491
20
24.55
30
3
2024/25
475
20
23.75
31
4
2025/26
457
20
22.85
32
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2004/05: 193 in 2003/04 → 243, +50 pupils.
Biggest loss in a single year: 1993/94: 205 in 1982/83 → 179, -26 pupils.
Largest single-class increase: Junior Infants in 2021/22 (44 → 63, +19).
Largest single-class decrease: Junior Infants in 2025/26 (55 → 32, -23).
Largest cohort-step gain: 4th → 5th in 2022/23 (60 → 68, +8).
Largest cohort-step loss: 4th → 5th in 2021/22 (60 → 56, -4).
Overall: 193 (1975/76) → 463 (2025/26), 270.
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
32
63
53.0
6
Senior Infants
46
62
56.2
6
1st Class
51
67
58.7
6
2nd Class
51
68
57.2
6
3rd Class
53
69
58.8
6
4th Class
56
60
58.3
6
5th Class
56
68
60.8
6
6th Class
57
73
62.5
6
Total
146
497
296.7
41
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).