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
23.80
2025/26
Mainstream classes
10
2025/26
Largest class group
30
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
247
9
27.44
33
5
2007/08
244
9
27.11
33
4
2008/09
251
9
27.89
34
5
2009/10
253
9
28.11
33
4
2010/11
260
9
28.89
33
6
2011/12
276
10
27.60
33
6
2012/13
266
10
26.60
33
6
2013/14
267
10
26.70
34
6
2014/15
255
10
25.50
34
4
2015/16
248
10
24.80
33
3
2016/17
250
11
22.73
34
2
2017/18
240
10
24.00
34
2
2019/20
223
9
24.78
31
2
2020/21
231
10
23.10
29
0
2021/22
225
9
25.00
32
1
2022/23
232
9
25.78
33
2
2023/24
233
10
23.30
33
2
2024/25
231
10
23.10
30
1
2025/26
238
10
23.80
30
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1977/78: 243 in 1976/77 → 278, +35 pupils.
Biggest loss in a single year: 1993/94: 288 in 1983/84 → 267, -21 pupils.
Largest single-class increase: 3rd Class in 2025/26 (29 → 42, +13).
Largest single-class decrease: 6th Class in 2021/22 (46 → 21, -25).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (36 → 42, +6).
Largest cohort-step loss: JI → SI in 2021/22 (29 → 28, -1).
Overall: 251 (1974/75) → 250 (2025/26), -1.
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
21
33
27.2
6
Senior Infants
22
34
28.5
6
1st Class
24
35
29.2
6
2nd Class
26
36
29.0
6
3rd Class
28
42
31.5
6
4th Class
24
32
28.8
6
5th Class
19
34
28.5
6
6th Class
21
46
31.0
6
Total
205
295
248.6
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).