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
26
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
381
13
29.31
33
9
2007/08
415
14
29.64
32
10
2008/09
422
15
28.13
30
4
2009/10
450
16
28.12
31
4
2010/11
434
16
27.12
29
0
2011/12
435
16
27.19
30
1
2012/13
438
16
27.38
30
1
2013/14
427
16
26.69
29
0
2014/15
425
16
26.56
28
0
2015/16
427
16
26.69
29
0
2016/17
434
16
27.12
29
0
2017/18
438
16
27.38
29
0
2019/20
422
16
26.38
28
0
2020/21
427
16
26.69
28
0
2021/22
423
16
26.44
28
0
2022/23
402
16
25.12
27
0
2023/24
412
16
25.75
27
0
2024/25
397
16
24.81
27
0
2025/26
362
16
22.62
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2002/03: 120 in 2001/02 → 201, +81 pupils.
Biggest loss in a single year: 2025/26: 409 in 2024/25 → 374, -35 pupils.
Largest single-class increase: Junior Infants in 2023/24 (43 → 53, +10).
Largest single-class decrease: Senior Infants in 2025/26 (53 → 37, -16).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (43 → 49, +6).
Largest cohort-step loss: JI → SI in 2025/26 (43 → 37, -6).
Overall: 34 (1999/00) → 374 (2025/26), 340.
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
56
48.2
6
Senior Infants
37
53
48.0
6
1st Class
42
54
49.7
6
2nd Class
43
56
50.3
6
3rd Class
48
54
51.3
6
4th Class
51
53
51.8
6
5th Class
49
56
52.2
6
6th Class
53
56
54.3
6
Total
34
461
366.6
27
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).