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
24.75
2025/26
Mainstream classes
16
2025/26
Largest class group
30
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
356
13
27.38
32
4
2007/08
366
13
28.15
36
5
2008/09
360
13
27.69
32
4
2009/10
372
13
28.62
32
7
2010/11
384
14
27.43
32
6
2011/12
385
14
27.50
32
5
2012/13
381
14
27.21
34
5
2013/14
375
14
26.79
31
2
2014/15
373
14
26.64
33
4
2015/16
380
14
27.14
33
4
2016/17
396
14
28.29
34
5
2017/18
388
14
27.71
34
4
2019/20
404
15
26.93
35
3
2020/21
403
16
25.19
29
0
2021/22
410
16
25.62
30
1
2022/23
407
16
25.44
30
2
2023/24
406
16
25.38
30
1
2024/25
402
16
25.12
29
0
2025/26
396
16
24.75
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 210 in 1978/79 → 286, +76 pupils.
Biggest loss in a single year: 1981/82: 290 in 1980/81 → 232, -58 pupils.
Largest single-class increase: 6th Class in 2023/24 (46 → 59, +13).
Largest single-class decrease: Junior Infants in 2025/26 (47 → 36, -11).
Largest cohort-step gain: 3rd → 4th in 2025/26 (50 → 54, +4).
Largest cohort-step loss: JI → SI in 2025/26 (47 → 43, -4).
Overall: 210 (1978/79) → 396 (2025/26), 186.
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
51
45.7
6
Senior Infants
43
53
48.0
6
1st Class
45
55
49.8
6
2nd Class
48
57
51.2
6
3rd Class
49
55
52.0
6
4th Class
49
59
52.7
6
5th Class
48
60
53.0
6
6th Class
46
59
51.7
6
Total
210
410
333.4
39
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).