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
25.75
2025/26
Mainstream classes
8
2025/26
Largest class group
32
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
227
8
28.38
31
4
2007/08
233
8
29.12
32
3
2008/09
242
9
26.89
32
5
2009/10
230
9
25.56
30
3
2010/11
227
9
25.22
30
2
2011/12
225
8
28.12
30
3
2012/13
214
8
26.75
29
0
2013/14
200
8
25.00
32
1
2014/15
209
7
29.86
35
4
2015/16
207
8
25.88
33
2
2016/17
207
8
25.88
32
1
2017/18
213
8
26.62
33
4
2019/20
187
7
26.71
34
2
2020/21
190
7
27.14
32
3
2021/22
199
7
28.43
33
4
2022/23
195
8
24.38
33
2
2023/24
204
8
25.50
32
2
2024/25
191
8
23.88
32
2
2025/26
206
8
25.75
32
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 119 in 1983/84 → 183, +64 pupils.
Biggest loss in a single year: 2018/19: 213 in 2017/18 → 185, -28 pupils.
Largest single-class increase: 6th Class in 2021/22 (19 → 33, +14).
Largest single-class decrease: 6th Class in 2024/25 (29 → 17, -12).
Largest cohort-step gain: 5th → 6th in 2023/24 (25 → 29, +4).
Largest cohort-step loss: 5th → 6th in 2024/25 (20 → 17, -3).
Overall: 62 (1974/75) → 206 (2025/26), 144.
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
31
25.2
6
Senior Infants
21
31
25.7
6
1st Class
14
33
25.0
6
2nd Class
16
32
23.2
6
3rd Class
16
32
24.2
6
4th Class
17
32
24.5
6
5th Class
19
32
25.3
6
6th Class
17
33
24.5
6
Total
62
242
173.7
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).