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
25.44
2025/26
Mainstream classes
9
2025/26
Largest class group
33
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
115
4
28.75
32
2
2007/08
129
5
25.80
32
2
2008/09
153
6
25.50
29
0
2009/10
176
6
29.33
38
3
2010/11
168
6
28.00
33
3
2011/12
185
7
26.43
31
1
2012/13
181
7
25.86
32
2
2013/14
193
7
27.57
33
4
2014/15
200
7
28.57
32
4
2015/16
220
8
27.50
33
5
2016/17
231
8
28.88
37
5
2017/18
237
9
26.33
32
4
2019/20
248
9
27.56
33
5
2020/21
246
9
27.33
33
5
2021/22
247
9
27.44
35
4
2022/23
248
10
24.80
34
3
2023/24
236
10
23.60
33
2
2024/25
234
10
23.40
34
2
2025/26
229
9
25.44
33
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 132 in 2007/08 → 156, +24 pupils.
Biggest loss in a single year: 1999/00: 87 in 1998/99 → 72, -15 pupils.
Largest single-class increase: 2nd Class in 2025/26 (26 → 38, +12).
Largest single-class decrease: 5th Class in 2022/23 (39 → 29, -10).
Largest cohort-step gain: 3rd → 4th in 2025/26 (30 → 33, +3).
Largest cohort-step loss: 3rd → 4th in 2024/25 (25 → 24, -1).
Overall: 68 (1975/76) → 229 (2025/26), 161.
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
24
34
26.5
6
Senior Infants
23
35
27.2
6
1st Class
24
36
29.2
6
2nd Class
24
38
30.3
6
3rd Class
25
35
29.7
6
4th Class
24
39
32.2
6
5th Class
24
39
32.0
6
6th Class
29
39
33.0
6
Total
68
249
146.5
42
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).