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
23.65
2025/26
Mainstream classes
17
2025/26
Largest class group
28
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
231
8
28.88
33
4
2007/08
229
8
28.62
33
2
2008/09
233
8
29.12
33
4
2009/10
264
9
29.33
33
4
2010/11
293
11
26.64
33
4
2011/12
324
12
27.00
33
4
2012/13
354
13
27.23
33
3
2013/14
381
14
27.21
32
4
2014/15
409
15
27.27
33
5
2015/16
442
16
27.62
32
7
2016/17
462
16
28.88
32
8
2017/18
468
17
27.53
32
7
2019/20
458
17
26.94
31
6
2020/21
450
17
26.47
31
4
2021/22
433
17
25.47
30
2
2022/23
437
17
25.71
30
3
2023/24
422
16
26.38
30
2
2024/25
409
16
25.56
31
2
2025/26
402
17
23.65
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2002/03: 163 in 2001/02 → 198, +35 pupils.
Biggest loss in a single year: 2021/22: 450 in 2020/21 → 433, -17 pupils.
Largest single-class increase: 3rd Class in 2025/26 (47 → 62, +15).
Largest single-class decrease: 6th Class in 2021/22 (60 → 48, -12).
Largest cohort-step gain: JI → SI in 2022/23 (57 → 60, +3).
Largest cohort-step loss: SI → 1st in 2021/22 (59 → 53, -6).
Overall: 20 (1995/96) → 402 (2025/26), 382.
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
40
57
51.5
6
Senior Infants
41
60
52.3
6
1st Class
49
60
54.5
6
2nd Class
47
61
54.7
6
3rd Class
47
62
55.3
6
4th Class
45
55
52.7
6
5th Class
49
54
52.0
6
6th Class
48
60
52.5
6
Total
20
468
291.0
31
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).