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
24.94
2025/26
Mainstream classes
16
2025/26
Largest class group
29
2025/26
Classes with 30+ pupils
0
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
102
4
25.50
29
0
2007/08
115
4
28.75
34
2
2008/09
139
5
27.80
30
1
2009/10
161
6
26.83
33
2
2010/11
187
7
26.71
33
2
2011/12
212
7
30.29
43
5
2012/13
241
9
26.78
33
3
2013/14
266
10
26.60
33
3
2014/15
292
11
26.55
32
3
2015/16
333
12
27.75
32
4
2016/17
364
13
28.00
32
5
2017/18
391
14
27.93
32
5
2019/20
429
16
26.81
32
3
2020/21
429
16
26.81
32
1
2021/22
424
17
24.94
29
0
2022/23
417
17
24.53
30
1
2023/24
402
17
23.65
27
0
2024/25
398
16
24.88
29
0
2025/26
399
16
24.94
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 64 in 1983/84 → 110, +46 pupils.
Biggest loss in a single year: 1998/99: 105 in 1997/98 → 87, -18 pupils.
Largest single-class increase: 5th Class in 2021/22 (48 → 59, +11).
Largest single-class decrease: 3rd Class in 2023/24 (57 → 48, -9).
Largest cohort-step gain: SI → 1st in 2025/26 (46 → 49, +3).
Largest cohort-step loss: SI → 1st in 2021/22 (56 → 51, -5).
Overall: 48 (1974/75) → 399 (2025/26), 351.
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
55
49.5
6
Senior Infants
46
56
49.5
6
1st Class
48
57
50.8
6
2nd Class
47
56
51.2
6
3rd Class
48
57
52.7
6
4th Class
49
58
53.0
6
5th Class
48
59
52.8
6
6th Class
47
59
52.0
6
Total
41
431
183.2
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).