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
22.30
2025/26
Mainstream classes
10
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
292
10
29.20
32
6
2007/08
295
11
26.82
32
1
2008/09
309
11
28.09
31
2
2009/10
298
11
27.09
30
3
2010/11
296
11
26.91
32
3
2011/12
295
11
26.82
32
4
2012/13
301
11
27.36
37
2
2013/14
290
11
26.36
35
5
2014/15
292
11
26.55
32
4
2015/16
293
11
26.64
33
3
2016/17
265
11
24.09
34
3
2017/18
264
10
26.40
30
2
2019/20
243
9
27.00
32
2
2020/21
244
9
27.11
37
4
2021/22
236
9
26.22
31
4
2022/23
236
9
26.22
34
3
2023/24
230
9
25.56
33
3
2024/25
238
9
26.44
33
3
2025/26
223
10
22.30
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2003/04: 229 in 2002/03 → 261, +32 pupils.
Biggest loss in a single year: 2016/17: 293 in 2015/16 → 265, -28 pupils.
Largest single-class increase: Senior Infants in 2021/22 (20 → 36, +16).
Largest single-class decrease: 5th Class in 2025/26 (33 → 20, -13).
Largest cohort-step gain: 2nd → 3rd in 2022/23 (31 → 33, +2).
Largest cohort-step loss: 5th → 6th in 2022/23 (36 → 34, -2).
Overall: 161 (1974/75) → 223 (2025/26), 62.
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
35
28.3
6
Senior Infants
20
36
28.2
6
1st Class
20
36
28.8
6
2nd Class
20
36
29.3
6
3rd Class
21
37
29.2
6
4th Class
21
37
30.2
6
5th Class
20
36
29.0
6
6th Class
24
37
31.5
6
Total
147
309
223.8
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).