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
18.81
2025/26
Mainstream classes
16
2025/26
Largest class group
23
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+
2008/09
27
2
13.50
18
0
2009/10
91
4
22.75
26
0
2010/11
132
7
18.86
27
0
2011/12
159
8
19.88
24
0
2012/13
208
10
20.80
25
0
2013/14
255
12
21.25
25
0
2014/15
297
14
21.21
28
0
2015/16
325
15
21.67
26
0
2016/17
350
16
21.88
26
0
2017/18
355
16
22.19
26
0
2019/20
355
17
20.88
25
0
2020/21
353
17
20.76
24
0
2021/22
342
17
20.12
24
0
2022/23
341
17
20.06
24
0
2023/24
314
17
18.47
23
0
2024/25
293
17
17.24
22
0
2025/26
301
16
18.81
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2009/10: 27 in 2008/09 → 91, +64 pupils.
Biggest loss in a single year: 2023/24: 341 in 2022/23 → 317, -24 pupils.
Largest single-class increase: Senior Infants in 2025/26 (28 → 38, +10).
Largest single-class decrease: 4th Class in 2021/22 (63 → 35, -28).
Largest cohort-step gain: SI → 1st in 2025/26 (28 → 35, +7).
Largest cohort-step loss: 4th → 5th in 2021/22 (63 → 56, -7).
Overall: 27 (2008/09) → 313 (2025/26), 286.
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
30
41
36.0
6
Senior Infants
28
42
37.2
6
1st Class
33
43
38.5
6
2nd Class
33
42
38.7
6
3rd Class
36
45
40.5
6
4th Class
35
63
44.7
6
5th Class
42
56
46.0
6
6th Class
40
54
45.0
6
Total
27
355
270.7
18
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).