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
23.69
2025/26
Mainstream classes
13
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
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
255
9
28.33
34
6
2007/08
281
10
28.10
34
6
2008/09
289
10
28.90
33
7
2009/10
301
10
30.10
33
7
2010/11
298
11
27.09
34
5
2011/12
292
11
26.55
33
4
2012/13
288
11
26.18
32
4
2013/14
275
11
25.00
30
1
2014/15
273
10
27.30
31
3
2015/16
259
10
25.90
30
3
2016/17
253
11
23.00
31
1
2017/18
260
11
23.64
30
2
2019/20
282
12
23.50
32
3
2020/21
301
13
23.15
33
2
2021/22
314
12
26.17
34
4
2022/23
316
13
24.31
33
2
2023/24
309
13
23.77
30
2
2024/25
305
13
23.46
29
0
2025/26
308
13
23.69
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2019/20: 253 in 2018/19 → 282, +29 pupils.
Biggest loss in a single year: 2015/16: 273 in 2014/15 → 259, -14 pupils.
Largest single-class increase: Senior Infants in 2025/26 (29 → 42, +13).
Largest single-class decrease: Junior Infants in 2023/24 (38 → 28, -10).
Largest cohort-step gain: 1st → 2nd in 2023/24 (43 → 45, +2).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (45 → 41, -4).
Overall: 120 (1974/75) → 308 (2025/26), 188.
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
28
45
38.3
6
Senior Infants
29
45
39.2
6
1st Class
30
43
38.0
6
2nd Class
36
45
40.5
6
3rd Class
39
44
40.5
6
4th Class
33
44
39.8
6
5th Class
31
44
37.8
6
6th Class
26
43
34.7
6
Total
120
316
231.3
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).