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
22.69
2025/26
Mainstream classes
13
2025/26
Largest class group
27
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
267
9
29.67
37
4
2007/08
262
10
26.20
33
3
2008/09
275
10
27.50
33
4
2009/10
293
10
29.30
36
5
2010/11
288
11
26.18
34
4
2011/12
288
11
26.18
35
4
2012/13
280
11
25.45
36
3
2013/14
291
10
29.10
37
5
2014/15
287
11
26.09
37
3
2015/16
295
11
26.82
37
5
2016/17
289
11
26.27
36
5
2017/18
289
11
26.27
33
5
2019/20
292
11
26.55
33
3
2020/21
285
11
25.91
32
3
2021/22
282
11
25.64
32
2
2022/23
278
11
25.27
33
1
2023/24
291
11
26.45
33
3
2024/25
299
12
24.92
33
3
2025/26
295
13
22.69
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 232 in 2005/06 → 267, +35 pupils.
Biggest loss in a single year: 1982/83: 241 in 1981/82 → 218, -23 pupils.
Largest single-class increase: 6th Class in 2021/22 (30 → 47, +17).
Largest single-class decrease: 5th Class in 2021/22 (48 → 32, -16).
Largest cohort-step gain: SI → 1st in 2023/24 (28 → 32, +4).
Largest cohort-step loss: 4th → 5th in 2025/26 (37 → 35, -2).
Overall: 222 (1974/75) → 307 (2025/26), 85.
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
28
42
35.2
6
Senior Infants
28
42
36.5
6
1st Class
32
44
37.7
6
2nd Class
28
41
35.7
6
3rd Class
28
44
35.7
6
4th Class
32
44
36.3
6
5th Class
31
48
37.2
6
6th Class
30
47
36.2
6
Total
168
311
249.5
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).