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
23.13
2025/26
Mainstream classes
15
2025/26
Largest class group
31
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
382
14
27.29
35
4
2007/08
416
15
27.73
33
7
2008/09
421
15
28.07
34
6
2009/10
419
15
27.93
32
7
2010/11
400
15
26.67
32
4
2011/12
401
15
26.73
32
6
2012/13
395
15
26.33
30
3
2013/14
406
15
27.07
30
3
2014/15
396
15
26.40
31
3
2015/16
405
15
27.00
32
4
2016/17
400
16
25.00
30
2
2017/18
399
16
24.94
31
4
2019/20
381
15
25.40
34
3
2020/21
348
15
23.20
32
2
2021/22
344
14
24.57
31
3
2022/23
348
14
24.86
30
1
2023/24
368
15
24.53
31
1
2024/25
354
15
23.60
30
1
2025/26
347
15
23.13
31
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 151 in 1982/83 → 213, +62 pupils.
Biggest loss in a single year: 2020/21: 387 in 2019/20 → 354, -33 pupils.
Largest single-class increase: 2nd Class in 2022/23 (34 → 53, +19).
Largest single-class decrease: 3rd Class in 2024/25 (55 → 30, -25).
Largest cohort-step gain: 4th → 5th in 2025/26 (55 → 62, +7).
Largest cohort-step loss: 5th → 6th in 2024/25 (50 → 45, -5).
Overall: 108 (1975/76) → 359 (2025/26), 251.
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
29
53
40.2
6
Senior Infants
30
51
42.2
6
1st Class
30
54
41.3
6
2nd Class
31
53
41.5
6
3rd Class
30
55
41.3
6
4th Class
31
55
45.0
6
5th Class
46
62
52.3
6
6th Class
44
62
49.8
6
Total
108
421
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).