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
26.41
2025/26
Mainstream classes
17
2025/26
Largest class group
30
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
444
17
26.12
32
3
2007/08
474
18
26.33
33
3
2008/09
524
20
26.20
33
4
2009/10
518
19
27.26
32
4
2010/11
518
19
27.26
32
5
2011/12
505
19
26.58
32
7
2012/13
531
19
27.95
32
2
2013/14
539
19
28.37
31
10
2014/15
544
19
28.63
31
12
2015/16
533
20
26.65
32
11
2016/17
506
20
25.30
31
6
2017/18
503
19
26.47
32
8
2019/20
494
19
26.00
33
7
2020/21
466
19
24.53
30
1
2021/22
460
18
25.56
31
4
2022/23
450
18
25.00
30
2
2023/24
460
18
25.56
31
4
2024/25
457
18
25.39
30
1
2025/26
449
17
26.41
30
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2003/04: 316 in 2002/03 → 376, +60 pupils.
Biggest loss in a single year: 1993/94: 270 in 1983/84 → 234, -36 pupils.
Largest single-class increase: 1st Class in 2024/25 (50 → 70, +20).
Largest single-class decrease: 1st Class in 2025/26 (70 → 56, -14).
Largest cohort-step gain: JI → SI in 2023/24 (60 → 65, +5).
Largest cohort-step loss: 3rd → 4th in 2023/24 (60 → 57, -3).
Overall: 206 (1974/75) → 454 (2025/26), 248.
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
50
60
52.8
6
Senior Infants
48
65
55.0
6
1st Class
50
70
57.7
6
2nd Class
53
68
58.7
6
3rd Class
51
61
57.0
6
4th Class
53
59
57.7
6
5th Class
54
67
59.5
6
6th Class
56
67
59.5
6
Total
206
544
372.2
43
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).