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
26.27
2025/26
Mainstream classes
11
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
222
8
27.75
31
3
2007/08
250
9
27.78
33
5
2008/09
260
9
28.89
32
5
2009/10
268
9
29.78
33
7
2010/11
270
10
27.00
34
6
2011/12
269
10
26.90
33
6
2012/13
283
10
28.30
33
6
2013/14
282
10
28.20
34
4
2014/15
286
10
28.60
34
5
2015/16
304
11
27.64
34
3
2016/17
303
11
27.55
34
3
2017/18
314
11
28.55
35
5
2019/20
333
13
25.62
33
3
2020/21
330
13
25.38
33
2
2021/22
330
13
25.38
34
2
2022/23
331
13
25.46
31
2
2023/24
310
13
23.85
31
2
2024/25
295
11
26.82
32
4
2025/26
289
11
26.27
32
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 222 in 2006/07 → 250, +28 pupils.
Biggest loss in a single year: 2023/24: 331 in 2022/23 → 310, -21 pupils.
Largest single-class increase: 6th Class in 2022/23 (34 → 56, +22).
Largest single-class decrease: 4th Class in 2022/23 (49 → 29, -20).
Largest cohort-step gain: 3rd → 4th in 2024/25 (48 → 52, +4).
Largest cohort-step loss: SI → 1st in 2023/24 (31 → 29, -2).
Overall: 111 (1974/75) → 295 (2025/26), 184.
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
24
43
31.5
6
Senior Infants
26
46
34.5
6
1st Class
29
46
37.5
6
2nd Class
29
48
38.2
6
3rd Class
29
49
41.2
6
4th Class
29
54
46.5
6
5th Class
30
53
44.0
6
6th Class
31
56
41.8
6
Total
111
333
243.5
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).