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
24.06
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
327
12
27.25
35
4
2007/08
333
13
25.62
34
3
2008/09
349
13
26.85
31
2
2009/10
347
13
26.69
31
3
2010/11
362
14
25.86
30
2
2011/12
392
15
26.13
32
3
2012/13
393
14
28.07
34
4
2013/14
384
14
27.43
33
5
2014/15
400
14
28.57
36
6
2015/16
389
15
25.93
32
2
2016/17
388
15
25.87
34
3
2017/18
397
15
26.47
32
4
2019/20
380
15
25.33
30
3
2020/21
377
15
25.13
32
2
2021/22
372
15
24.80
35
3
2022/23
377
15
25.13
32
2
2023/24
387
16
24.19
30
1
2024/25
393
16
24.56
30
1
2025/26
385
16
24.06
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 153 in 1982/83 → 208, +55 pupils.
Biggest loss in a single year: 2018/19: 397 in 2017/18 → 382, -15 pupils.
Largest single-class increase: 1st Class in 2021/22 (37 → 59, +22).
Largest single-class decrease: 2nd Class in 2021/22 (53 → 37, -16).
Largest cohort-step gain: SI → 1st in 2022/23 (45 → 49, +4).
Largest cohort-step loss: JI → SI in 2025/26 (50 → 48, -2).
Overall: 89 (1975/76) → 390 (2025/26), 301.
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
45
50
47.3
6
Senior Infants
45
58
49.3
6
1st Class
37
59
48.5
6
2nd Class
37
57
49.0
6
3rd Class
38
56
49.5
6
4th Class
38
56
47.5
6
5th Class
40
55
48.3
6
6th Class
41
55
48.2
6
Total
89
400
287.7
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).