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
23.07
2025/26
Mainstream classes
14
2025/26
Largest class group
34
2025/26
Classes with 30+ pupils
2
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
405
15
27.00
32
3
2007/08
399
15
26.60
32
3
2008/09
384
15
25.60
32
3
2009/10
361
14
25.79
34
4
2010/11
356
14
25.43
34
2
2011/12
350
13
26.92
32
5
2012/13
353
14
25.21
31
2
2013/14
352
13
27.08
33
3
2014/15
361
13
27.77
35
4
2015/16
360
13
27.69
34
6
2016/17
361
14
25.79
33
3
2017/18
362
14
25.86
34
4
2019/20
388
15
25.87
32
3
2020/21
370
15
24.67
29
0
2021/22
356
15
23.73
32
3
2022/23
341
15
22.73
34
1
2023/24
342
14
24.43
35
2
2024/25
323
14
23.07
33
2
2025/26
323
14
23.07
34
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 364 in 1983/84 → 539, +175 pupils.
Biggest loss in a single year: 1979/80: 534 in 1978/79 → 462, -72 pupils.
Largest single-class increase: 2nd Class in 2025/26 (32 → 50, +18).
Largest single-class decrease: 6th Class in 2022/23 (58 → 34, -24).
Largest cohort-step gain: JI → SI in 2025/26 (38 → 42, +4).
Largest cohort-step loss: 3rd → 4th in 2023/24 (53 → 48, -5).
Overall: 712 (1974/75) → 329 (2025/26), -383.
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
35
50
40.0
6
Senior Infants
33
48
41.2
6
1st Class
35
52
43.2
6
2nd Class
32
51
43.7
6
3rd Class
33
53
42.8
6
4th Class
34
48
42.2
6
5th Class
35
58
46.2
6
6th Class
34
58
45.7
6
Total
329
712
438.1
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).