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
24.10
2025/26
Mainstream classes
10
2025/26
Largest class group
32
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
215
8
26.88
30
1
2007/08
218
8
27.25
30
2
2008/09
206
8
25.75
32
1
2009/10
221
8
27.62
34
4
2010/11
232
8
29.00
32
5
2011/12
245
8
30.62
43
5
2012/13
270
10
27.00
35
4
2013/14
268
10
26.80
33
4
2014/15
294
11
26.73
34
3
2015/16
295
11
26.82
32
3
2016/17
302
12
25.17
31
2
2017/18
291
11
26.45
31
3
2019/20
296
11
26.91
32
5
2020/21
271
11
24.64
32
5
2021/22
267
11
24.27
31
2
2022/23
271
11
24.64
31
3
2023/24
261
11
23.73
31
2
2024/25
243
11
22.09
30
2
2025/26
241
10
24.10
32
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1983/84: 505 in 1982/83 → 609, +104 pupils.
Biggest loss in a single year: 1994/95: 561 in 1993/94 → 485, -76 pupils.
Largest single-class increase: Junior Infants in 2022/23 (29 → 47, +18).
Largest single-class decrease: Junior Infants in 2023/24 (47 → 22, -25).
Largest cohort-step gain: SI → 1st in 2025/26 (21 → 25, +4).
Largest cohort-step loss: 1st → 2nd in 2024/25 (30 → 26, -4).
Overall: 110 (1975/76) → 257 (2025/26), 147.
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
22
47
33.0
6
Senior Infants
21
46
32.3
6
1st Class
25
44
32.7
6
2nd Class
26
44
32.2
6
3rd Class
28
39
31.3
6
4th Class
29
38
32.3
6
5th Class
26
45
34.2
6
6th Class
30
45
34.3
6
Total
110
609
293.9
42
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).