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
23.82
2025/26
Mainstream classes
11
2025/26
Largest class group
29
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
217
8
27.12
36
1
2007/08
208
8
26.00
34
1
2008/09
246
9
27.33
35
3
2009/10
241
9
26.78
32
3
2010/11
241
9
26.78
32
2
2011/12
238
9
26.44
29
0
2012/13
247
10
24.70
30
2
2013/14
259
9
28.78
35
3
2014/15
263
10
26.30
29
0
2015/16
272
10
27.20
34
5
2016/17
262
10
26.20
31
1
2017/18
261
10
26.10
28
0
2019/20
242
10
24.20
35
1
2020/21
233
9
25.89
33
1
2021/22
225
9
25.00
33
1
2022/23
241
10
24.10
33
1
2023/24
232
10
23.20
28
0
2024/25
254
11
23.09
29
0
2025/26
262
11
23.82
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 98 in 1983/84 → 160, +62 pupils.
Biggest loss in a single year: 1994/95: 160 in 1993/94 → 145, -15 pupils.
Largest single-class increase: 1st Class in 2024/25 (26 → 39, +13).
Largest single-class decrease: 4th Class in 2021/22 (33 → 21, -12).
Largest cohort-step gain: 2nd → 3rd in 2024/25 (33 → 36, +3).
Largest cohort-step loss: JI → SI in 2021/22 (35 → 32, -3).
Overall: 53 (1974/75) → 273 (2025/26), 220.
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
27
43
34.2
6
Senior Infants
27
38
32.3
6
1st Class
26
39
31.0
6
2nd Class
23
36
30.2
6
3rd Class
21
36
28.5
6
4th Class
21
37
29.8
6
5th Class
24
35
29.0
6
6th Class
25
33
29.5
6
Total
53
273
179.6
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).