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
21.67
2025/26
Mainstream classes
9
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
163
6
27.17
32
2
2007/08
193
7
27.57
33
4
2008/09
222
8
27.75
32
4
2009/10
221
8
27.62
35
5
2010/11
250
9
27.78
33
4
2011/12
247
9
27.44
32
4
2012/13
266
9
29.56
33
5
2013/14
260
10
26.00
31
2
2014/15
279
10
27.90
32
3
2015/16
291
11
26.45
29
0
2016/17
290
11
26.36
33
2
2017/18
292
11
26.55
30
4
2019/20
263
10
26.30
34
1
2020/21
262
11
23.82
30
1
2021/22
252
10
25.20
32
1
2022/23
244
10
24.40
33
1
2023/24
221
10
22.10
28
0
2024/25
209
9
23.22
31
2
2025/26
195
9
21.67
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 163 in 2006/07 → 193, +30 pupils.
Biggest loss in a single year: 1993/94: 260 in 1983/84 → 158, -102 pupils.
Largest single-class increase: 4th Class in 2025/26 (25 → 40, +15).
Largest single-class decrease: Junior Infants in 2023/24 (29 → 15, -14).
Largest cohort-step gain: SI → 1st in 2025/26 (16 → 19, +3).
Largest cohort-step loss: SI → 1st in 2021/22 (27 → 25, -2).
Overall: 166 (1974/75) → 204 (2025/26), 38.
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
12
37
23.0
6
Senior Infants
14
37
24.7
6
1st Class
19
38
27.8
6
2nd Class
25
39
30.0
6
3rd Class
26
40
29.8
6
4th Class
25
40
31.5
6
5th Class
26
40
31.7
6
6th Class
29
42
33.5
6
Total
124
292
206.7
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).