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
23.76
2025/26
Mainstream classes
21
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
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
212
10
21.20
25
0
2007/08
267
13
20.54
23
0
2008/09
353
15
23.53
31
1
2009/10
413
16
25.81
31
2
2010/11
440
17
25.88
33
4
2011/12
493
20
24.65
30
2
2012/13
544
22
24.73
34
3
2013/14
569
23
24.74
35
3
2014/15
559
24
23.29
33
2
2015/16
578
23
25.13
33
2
2016/17
575
23
25.00
33
2
2017/18
584
23
25.39
32
2
2019/20
563
24
23.46
28
0
2020/21
526
23
22.87
28
0
2021/22
532
23
23.13
29
0
2022/23
512
23
22.26
27
0
2023/24
483
23
21.00
27
0
2024/25
471
21
22.43
27
0
2025/26
499
21
23.76
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 91 in 2005/06 → 212, +121 pupils.
Biggest loss in a single year: 2019/20: 617 in 2018/19 → 575, -42 pupils.
Largest single-class increase: 2nd Class in 2025/26 (49 → 63, +14).
Largest single-class decrease: 4th Class in 2023/24 (80 → 66, -14).
Largest cohort-step gain: 5th → 6th in 2025/26 (68 → 83, +15).
Largest cohort-step loss: 4th → 5th in 2023/24 (80 → 74, -6).
Overall: 91 (2005/06) → 511 (2025/26), 420.
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
44
63
52.8
6
Senior Infants
50
68
56.0
6
1st Class
49
62
55.7
6
2nd Class
49
70
59.3
6
3rd Class
53
80
64.5
6
4th Class
53
80
67.7
6
5th Class
59
78
71.7
6
6th Class
74
85
78.7
6
Total
91
617
477.8
21
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).