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
22.80
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
254
9
28.22
35
4
2007/08
251
10
25.10
33
3
2008/09
246
9
27.33
33
4
2009/10
258
8
32.25
35
8
2010/11
255
9
28.33
35
5
2011/12
256
9
28.44
38
5
2012/13
261
10
26.10
33
6
2013/14
267
10
26.70
35
6
2014/15
275
10
27.50
34
5
2015/16
288
10
28.80
33
6
2016/17
273
11
24.82
33
4
2017/18
278
11
25.27
33
4
2019/20
281
11
25.55
33
2
2020/21
266
11
24.18
30
1
2021/22
261
10
26.10
31
3
2022/23
242
10
24.20
31
3
2023/24
248
10
24.80
32
3
2024/25
238
10
23.80
32
3
2025/26
228
10
22.80
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1981/82: 378 in 1980/81 → 397, +19 pupils.
Biggest loss in a single year: 1993/94: 377 in 1983/84 → 239, -138 pupils.
Largest single-class increase: 5th Class in 2023/24 (30 → 46, +16).
Largest single-class decrease: 5th Class in 2021/22 (51 → 31, -20).
Largest cohort-step gain: JI → SI in 2025/26 (17 → 25, +8).
Largest cohort-step loss: 5th → 6th in 2024/25 (46 → 43, -3).
Overall: 364 (1974/75) → 234 (2025/26), -130.
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
17
30
24.3
6
Senior Infants
23
31
26.8
6
1st Class
22
31
27.8
6
2nd Class
21
38
29.8
6
3rd Class
28
37
31.7
6
4th Class
30
41
33.5
6
5th Class
30
51
37.0
6
6th Class
30
50
37.2
6
Total
222
397
280.2
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).