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
23.40
2025/26
Mainstream classes
20
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
3
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
312
12
26.00
32
3
2007/08
345
13
26.54
33
4
2008/09
403
16
25.19
29
0
2009/10
404
15
26.93
44
1
2010/11
411
16
25.69
28
0
2011/12
439
16
27.44
31
4
2012/13
442
16
27.62
31
2
2013/14
450
16
28.12
31
3
2014/15
473
17
27.82
31
7
2015/16
494
18
27.44
32
7
2016/17
487
18
27.06
32
7
2017/18
478
18
26.56
33
5
2019/20
491
18
27.28
34
10
2020/21
493
18
27.39
32
9
2021/22
477
19
25.11
32
6
2022/23
478
19
25.16
32
5
2023/24
486
19
25.58
32
6
2024/25
478
20
23.90
31
3
2025/26
468
20
23.40
31
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 345 in 2007/08 → 403, +58 pupils.
Biggest loss in a single year: 1999/00: 302 in 1998/99 → 273, -29 pupils.
Largest single-class increase: Junior Infants in 2023/24 (62 → 74, +12).
Largest single-class decrease: Junior Infants in 2024/25 (74 → 54, -20).
Largest cohort-step gain: JI → SI in 2022/23 (53 → 57, +4).
Largest cohort-step loss: 1st → 2nd in 2022/23 (65 → 60, -5).
Overall: 319 (1997/98) → 480 (2025/26), 161.
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
53
74
60.5
6
Senior Infants
57
75
63.3
6
1st Class
58
72
63.3
6
2nd Class
60
62
60.7
6
3rd Class
55
61
59.2
6
4th Class
56
63
60.2
6
5th Class
57
63
59.2
6
6th Class
56
64
59.5
6
Total
238
497
396.7
29
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).