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
22.10
2025/26
Mainstream classes
10
2025/26
Largest class group
32
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
268
9
29.78
34
5
2007/08
293
11
26.64
32
4
2008/09
302
11
27.45
34
3
2009/10
321
11
29.18
33
5
2010/11
302
12
25.17
32
2
2011/12
313
11
28.45
30
2
2012/13
313
12
26.08
34
1
2013/14
334
12
27.83
32
3
2014/15
346
12
28.83
35
5
2015/16
359
13
27.62
32
2
2016/17
369
14
26.36
34
3
2017/18
360
14
25.71
32
3
2019/20
361
15
24.07
30
2
2020/21
328
15
21.87
27
0
2021/22
288
15
19.20
27
0
2022/23
281
14
20.07
26
0
2023/24
253
12
21.08
26
0
2024/25
240
11
21.82
29
0
2025/26
221
10
22.10
32
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 233 in 2005/06 → 268, +35 pupils.
Biggest loss in a single year: 2021/22: 334 in 2020/21 → 293, -41 pupils.
Largest single-class increase: Senior Infants in 2025/26 (25 → 35, +10).
Largest single-class decrease: 3rd Class in 2024/25 (38 → 20, -18).
Largest cohort-step gain: JI → SI in 2025/26 (31 → 35, +4).
Largest cohort-step loss: 3rd → 4th in 2021/22 (46 → 41, -5).
Overall: 126 (1974/75) → 233 (2025/26), 107.
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
21
34
27.8
6
Senior Infants
22
38
29.8
6
1st Class
24
41
31.2
6
2nd Class
23
41
32.8
6
3rd Class
20
46
33.8
6
4th Class
21
45
36.0
6
5th Class
33
42
38.3
6
6th Class
34
53
41.3
6
Total
126
371
234.7
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).