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
25.12
2025/26
Mainstream classes
16
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
275
10
27.50
32
3
2007/08
332
12
27.67
31
3
2008/09
379
14
27.07
31
6
2009/10
416
15
27.73
32
4
2010/11
448
16
28.00
32
6
2011/12
480
17
28.24
32
7
2012/13
493
17
29.00
32
10
2013/14
487
17
28.65
32
7
2014/15
482
17
28.35
30
8
2015/16
487
17
28.65
31
8
2016/17
489
17
28.76
31
8
2017/18
465
16
29.06
31
7
2019/20
442
17
26.00
30
1
2020/21
432
16
27.00
30
1
2021/22
435
16
27.19
28
0
2022/23
418
16
26.12
28
0
2023/24
408
16
25.50
28
0
2024/25
407
16
25.44
28
0
2025/26
402
16
25.12
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 195 in 2005/06 → 275, +80 pupils.
Biggest loss in a single year: 2017/18: 495 in 2016/17 → 477, -18 pupils.
Largest single-class increase: 2nd Class in 2021/22 (52 → 57, +5).
Largest single-class decrease: 1st Class in 2022/23 (56 → 50, -6).
Largest cohort-step gain: SI → 1st in 2021/22 (53 → 56, +3).
Largest cohort-step loss: SI → 1st in 2022/23 (53 → 50, -3).
Overall: 33 (2002/03) → 414 (2025/26), 381.
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
47
56
51.7
6
Senior Infants
49
54
52.2
6
1st Class
50
56
53.2
6
2nd Class
50
57
52.7
6
3rd Class
50
56
53.0
6
4th Class
49
56
52.8
6
5th Class
51
54
53.3
6
6th Class
51
58
54.3
6
Total
33
499
383.0
24
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).