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
23.00
2025/26
Mainstream classes
15
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
272
10
27.20
33
4
2007/08
271
10
27.10
33
3
2008/09
266
10
26.60
31
3
2009/10
268
10
26.80
31
4
2010/11
263
10
26.30
32
4
2011/12
282
10
28.20
31
5
2012/13
274
10
27.40
30
2
2013/14
287
10
28.70
31
4
2014/15
298
11
27.09
32
3
2015/16
318
11
28.91
32
4
2016/17
338
12
28.17
31
4
2017/18
362
13
27.85
31
3
2019/20
361
14
25.79
30
2
2020/21
362
14
25.86
30
3
2021/22
333
16
20.81
28
0
2022/23
333
14
23.79
30
1
2023/24
364
15
24.27
29
0
2024/25
358
15
23.87
30
2
2025/26
345
15
23.00
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2023/24: 333 in 2022/23 → 364, +31 pupils.
Biggest loss in a single year: 1993/94: 209 in 1983/84 → 173, -36 pupils.
Largest single-class increase: 2nd Class in 2025/26 (31 → 52, +21).
Largest single-class decrease: 2nd Class in 2024/25 (45 → 31, -14).
Largest cohort-step gain: JI → SI in 2023/24 (35 → 44, +9).
Largest cohort-step loss: 3rd → 4th in 2021/22 (51 → 47, -4).
Overall: 171 (1974/75) → 357 (2025/26), 186.
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
29
41
36.5
6
Senior Infants
30
46
39.2
6
1st Class
31
47
41.2
6
2nd Class
31
52
44.0
6
3rd Class
33
51
44.2
6
4th Class
43
51
47.7
6
5th Class
44
58
48.5
6
6th Class
42
59
50.0
6
Total
166
368
255.7
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).