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
25.21
2025/26
Mainstream classes
19
2025/26
Largest class group
33
2025/26
Classes with 30+ pupils
8
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
489
17
28.76
32
13
2007/08
489
18
27.17
31
11
2008/09
494
18
27.44
31
12
2009/10
499
18
27.72
32
12
2010/11
500
18
27.78
32
12
2011/12
503
18
27.94
32
12
2012/13
502
18
27.89
32
12
2013/14
502
18
27.89
33
11
2014/15
502
18
27.89
32
12
2015/16
500
18
27.78
33
9
2016/17
502
18
27.89
33
11
2017/18
503
18
27.94
33
11
2019/20
492
19
25.89
32
9
2020/21
489
19
25.74
33
9
2021/22
485
19
25.53
32
8
2022/23
478
19
25.16
31
7
2023/24
482
19
25.37
33
5
2024/25
479
19
25.21
33
5
2025/26
479
19
25.21
33
8
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 105 in 1983/84 → 405, +300 pupils.
Biggest loss in a single year: 1994/95: 405 in 1993/94 → 376, -29 pupils.
Largest single-class increase: 1st Class in 2023/24 (59 → 65, +6).
Largest single-class decrease: 6th Class in 2025/26 (65 → 57, -8).
Largest cohort-step gain: SI → 1st in 2023/24 (62 → 65, +3).
Largest cohort-step loss: 1st → 2nd in 2024/25 (65 → 63, -2).
Overall: 65 (1982/83) → 479 (2025/26), 414.
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
58
61
59.5
6
Senior Infants
58
62
60.0
6
1st Class
59
65
60.8
6
2nd Class
57
63
59.8
6
3rd Class
58
63
60.7
6
4th Class
56
62
59.0
6
5th Class
57
65
60.3
6
6th Class
57
65
61.8
6
Total
65
503
452.8
35
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).