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
23.67
2025/26
Mainstream classes
12
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
250
9
27.78
32
3
2007/08
260
9
28.89
34
5
2008/09
262
10
26.20
32
4
2009/10
264
9
29.33
34
4
2010/11
253
10
25.30
32
3
2011/12
243
9
27.00
34
4
2012/13
259
9
28.78
34
6
2013/14
270
10
27.00
35
4
2014/15
268
10
26.80
35
3
2015/16
272
10
27.20
36
3
2016/17
294
10
29.40
33
4
2017/18
285
11
25.91
30
1
2019/20
323
12
26.92
31
2
2020/21
316
12
26.33
31
3
2021/22
302
12
25.17
30
1
2022/23
310
12
25.83
31
2
2023/24
302
12
25.17
31
2
2024/25
290
12
24.17
32
1
2025/26
284
12
23.67
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2019/20: 297 in 2018/19 → 323, +26 pupils.
Biggest loss in a single year: 1993/94: 259 in 1983/84 → 244, -15 pupils.
Largest single-class increase: Junior Infants in 2022/23 (31 → 46, +15).
Largest single-class decrease: Junior Infants in 2023/24 (46 → 31, -15).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (39 → 43, +4).
Largest cohort-step loss: 3rd → 4th in 2024/25 (43 → 41, -2).
Overall: 169 (1976/77) → 290 (2025/26), 121.
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
31
46
36.0
6
Senior Infants
30
45
36.7
6
1st Class
30
44
35.7
6
2nd Class
31
46
37.0
6
3rd Class
32
47
38.0
6
4th Class
33
46
39.0
6
5th Class
32
46
39.7
6
6th Class
33
46
39.7
6
Total
169
323
257.2
41
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).