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
22.62
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
244
9
27.11
31
4
2007/08
310
12
25.83
29
0
2008/09
346
13
26.62
29
0
2009/10
378
14
27.00
29
0
2010/11
406
15
27.07
29
0
2011/12
451
16
28.19
29
0
2012/13
451
16
28.19
29
0
2013/14
448
16
28.00
29
0
2014/15
434
16
27.12
29
0
2015/16
428
16
26.75
29
0
2016/17
430
16
26.88
28
0
2017/18
424
16
26.50
29
0
2019/20
405
16
25.31
27
0
2020/21
400
16
25.00
28
0
2021/22
417
16
26.06
27
0
2022/23
406
16
25.38
28
0
2023/24
405
16
25.31
27
0
2024/25
401
16
25.06
27
0
2025/26
362
16
22.62
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2005/06: 52 in 2004/05 → 168, +116 pupils.
Biggest loss in a single year: 2025/26: 401 in 2024/25 → 362, -39 pupils.
Largest single-class increase: Senior Infants in 2021/22 (41 → 53, +12).
Largest single-class decrease: Senior Infants in 2025/26 (53 → 32, -21).
Largest cohort-step gain: SI → 1st in 2021/22 (41 → 49, +8).
Largest cohort-step loss: SI → 1st in 2025/26 (53 → 46, -7).
Overall: 52 (2004/05) → 362 (2025/26), 310.
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
28
51
42.2
6
Senior Infants
32
53
45.2
6
1st Class
46
53
49.5
6
2nd Class
47
55
51.2
6
3rd Class
45
54
51.3
6
4th Class
51
55
52.8
6
5th Class
53
55
53.8
6
6th Class
50
55
52.5
6
Total
52
451
373.7
22
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).