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
24.88
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
397
15
26.47
35
3
2007/08
384
15
25.60
34
3
2008/09
363
15
24.20
31
3
2009/10
362
13
27.85
33
8
2010/11
346
14
24.71
34
3
2011/12
348
13
26.77
34
6
2012/13
362
13
27.85
33
6
2013/14
375
13
28.85
35
3
2014/15
392
14
28.00
34
6
2015/16
399
14
28.50
35
5
2016/17
405
15
27.00
32
5
2017/18
417
15
27.80
32
5
2019/20
417
16
26.06
32
2
2020/21
411
16
25.69
28
0
2021/22
407
16
25.44
28
0
2022/23
394
16
24.62
29
0
2023/24
394
16
24.62
27
0
2024/25
398
16
24.88
28
0
2025/26
398
16
24.88
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2014/15: 375 in 2013/14 → 392, +17 pupils.
Biggest loss in a single year: 2002/03: 435 in 2001/02 → 398, -37 pupils.
Largest single-class increase: Senior Infants in 2024/25 (39 → 53, +14).
Largest single-class decrease: Senior Infants in 2023/24 (49 → 39, -10).
Largest cohort-step gain: SI → 1st in 2024/25 (39 → 44, +5).
Largest cohort-step loss: 3rd → 4th in 2025/26 (54 → 50, -4).
Overall: 473 (1998/99) → 398 (2025/26), -75.
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
39
51
46.5
6
Senior Infants
39
53
47.8
6
1st Class
44
54
49.7
6
2nd Class
47
54
49.8
6
3rd Class
47
55
52.0
6
4th Class
48
54
51.0
6
5th Class
48
54
51.3
6
6th Class
47
56
52.2
6
Total
348
474
400.6
28
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).