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
22.81
2025/26
Mainstream classes
16
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
329
13
25.31
29
0
2007/08
357
14
25.50
29
0
2008/09
366
16
22.88
29
0
2009/10
379
16
23.69
29
0
2010/11
358
16
22.38
29
0
2011/12
364
15
24.27
34
1
2012/13
363
15
24.20
29
0
2013/14
364
15
24.27
33
1
2014/15
362
15
24.13
31
1
2015/16
362
15
24.13
32
1
2016/17
358
15
23.87
31
2
2017/18
380
14
27.14
32
4
2019/20
392
16
24.50
32
2
2020/21
390
16
24.38
32
1
2021/22
383
16
23.94
28
0
2022/23
376
16
23.50
28
0
2023/24
382
16
23.88
28
0
2024/25
370
16
23.12
27
0
2025/26
365
16
22.81
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 327 in 2005/06 → 366, +39 pupils.
Biggest loss in a single year: 1993/94: 452 in 1983/84 → 305, -147 pupils.
Largest single-class increase: Junior Infants in 2023/24 (30 → 45, +15).
Largest single-class decrease: Junior Infants in 2022/23 (48 → 30, -18).
Largest cohort-step gain: JI → SI in 2023/24 (30 → 37, +7).
Largest cohort-step loss: 1st → 2nd in 2024/25 (47 → 45, -2).
Overall: 529 (1974/75) → 378 (2025/26), -151.
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
30
49
41.3
6
Senior Infants
35
49
42.8
6
1st Class
36
50
44.5
6
2nd Class
39
51
45.7
6
3rd Class
46
55
50.8
6
4th Class
46
57
51.3
6
5th Class
47
55
50.7
6
6th Class
48
61
53.8
6
Total
302
530
389.1
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).