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
26.57
2025/26
Mainstream classes
7
2025/26
Largest class group
34
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
31
4
2007/08
256
9
28.44
33
4
2008/09
238
10
23.80
33
4
2009/10
238
9
26.44
33
5
2010/11
244
10
24.40
32
3
2011/12
264
10
26.40
33
5
2012/13
274
10
27.40
34
5
2013/14
271
10
27.10
33
5
2014/15
265
10
26.50
33
3
2015/16
265
10
26.50
32
3
2016/17
267
10
26.70
33
4
2017/18
262
10
26.20
32
3
2019/20
223
9
24.78
30
2
2020/21
196
8
24.50
30
1
2021/22
188
8
23.50
26
0
2022/23
198
8
24.75
28
0
2023/24
179
8
22.38
27
0
2024/25
189
7
27.00
33
3
2025/26
186
7
26.57
34
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2000/01: 211 in 1999/00 → 232, +21 pupils.
Biggest loss in a single year: 2019/20: 254 in 2018/19 → 223, -31 pupils.
Largest single-class increase: Junior Infants in 2024/25 (14 → 21, +7).
Largest single-class decrease: 1st Class in 2025/26 (27 → 13, -14).
Largest cohort-step gain: 5th → 6th in 2024/25 (27 → 33, +6).
Largest cohort-step loss: SI → 1st in 2025/26 (19 → 13, -6).
Overall: 191 (1974/75) → 186 (2025/26), -5.
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
14
26
21.2
6
Senior Infants
18
26
22.0
6
1st Class
13
27
21.8
6
2nd Class
21
29
24.2
6
3rd Class
19
27
23.0
6
4th Class
21
28
24.2
6
5th Class
21
28
25.5
6
6th Class
22
33
27.5
6
Total
179
286
231.2
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).