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
23.45
2025/26
Mainstream classes
11
2025/26
Largest class group
33
2025/26
Classes with 30+ pupils
3
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
248
9
27.56
32
5
2007/08
243
10
24.30
33
2
2008/09
258
11
23.45
32
2
2009/10
251
11
22.82
31
2
2010/11
249
10
24.90
34
3
2011/12
241
9
26.78
35
3
2012/13
240
10
24.00
35
3
2013/14
261
11
23.73
35
2
2014/15
274
11
24.91
35
3
2015/16
276
11
25.09
35
4
2016/17
283
11
25.73
33
5
2017/18
282
12
23.50
32
3
2019/20
284
11
25.82
34
4
2020/21
294
11
26.73
34
4
2021/22
298
12
24.83
34
3
2022/23
278
12
23.17
33
3
2023/24
281
11
25.55
34
4
2024/25
274
11
24.91
32
3
2025/26
258
11
23.45
33
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 228 in 2005/06 → 254, +26 pupils.
Biggest loss in a single year: 1993/94: 584 in 1982/83 → 330, -254 pupils.
Largest single-class increase: 6th Class in 2021/22 (31 → 57, +26).
Largest single-class decrease: 6th Class in 2022/23 (57 → 32, -25).
Largest cohort-step gain: JI → SI in 2021/22 (31 → 33, +2).
Largest cohort-step loss: SI → 1st in 2023/24 (37 → 33, -4).
Overall: 713 (1975/76) → 258 (2025/26), -455.
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
36
30.7
6
Senior Infants
23
38
31.8
6
1st Class
25
44
34.0
6
2nd Class
27
43
34.8
6
3rd Class
28
43
34.3
6
4th Class
30
44
35.0
6
5th Class
30
57
39.8
6
6th Class
31
57
40.0
6
Total
228
713
331.9
40
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).