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
33
2025/26
Classes with 30+ pupils
2
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
679
24
28.29
30
1
2007/08
665
24
27.71
31
5
2008/09
630
24
26.25
31
5
2009/10
609
23
26.48
31
4
2010/11
591
22
26.86
30
1
2011/12
549
21
26.14
30
1
2012/13
555
20
27.75
35
4
2013/14
557
20
27.85
36
4
2014/15
546
20
27.30
35
4
2015/16
547
20
27.35
37
5
2016/17
563
22
25.59
30
5
2017/18
552
21
26.29
32
5
2019/20
512
20
25.60
32
5
2020/21
475
19
25.00
31
5
2021/22
446
19
23.47
31
5
2022/23
426
18
23.67
32
4
2023/24
400
18
22.22
32
2
2024/25
376
16
23.50
32
2
2025/26
362
16
22.62
33
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 680 in 1982/83 → 750, +70 pupils.
Biggest loss in a single year: 2011/12: 591 in 2010/11 → 549, -42 pupils.
Largest single-class increase: 6th Class in 2025/26 (54 → 65, +11).
Largest single-class decrease: 4th Class in 2024/25 (64 → 49, -15).
Largest cohort-step gain: 3rd → 4th in 2023/24 (61 → 64, +3).
Largest cohort-step loss: 1st → 2nd in 2025/26 (43 → 40, -3).
Overall: 665 (1975/76) → 374 (2025/26), -291.
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
39
47
42.8
6
Senior Infants
40
49
44.8
6
1st Class
41
62
48.2
6
2nd Class
40
63
50.5
6
3rd Class
45
61
54.0
6
4th Class
45
64
56.0
6
5th Class
49
67
59.5
6
6th Class
54
78
65.0
6
Total
374
774
623.8
40
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).