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
27.12
2025/26
Mainstream classes
16
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
3
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
22
2
11.00
14
0
2009/10
70
4
17.50
22
0
2010/11
131
6
21.83
30
1
2011/12
188
8
23.50
28
0
2012/13
245
10
24.50
31
2
2013/14
306
11
27.82
32
3
2014/15
356
13
27.38
33
5
2015/16
390
14
27.86
31
6
2016/17
428
15
28.53
32
10
2017/18
451
16
28.19
32
6
2019/20
455
16
28.44
31
4
2020/21
458
16
28.62
31
7
2021/22
456
16
28.50
31
6
2022/23
447
16
27.94
30
3
2023/24
436
16
27.25
29
0
2024/25
435
16
27.19
30
1
2025/26
434
16
27.12
30
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2010/11: 70 in 2009/10 → 131, +61 pupils.
Biggest loss in a single year: 2023/24: 447 in 2022/23 → 436, -11 pupils.
Largest single-class increase: 1st Class in 2021/22 (51 → 59, +8).
Largest single-class decrease: Senior Infants in 2022/23 (61 → 52, -9).
Largest cohort-step gain: SI → 1st in 2025/26 (54 → 58, +4).
Largest cohort-step loss: 4th → 5th in 2023/24 (58 → 54, -4).
Overall: 22 (2008/09) → 434 (2025/26), 412.
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
49
60
52.3
6
Senior Infants
50
61
54.7
6
1st Class
51
59
55.7
6
2nd Class
53
57
54.7
6
3rd Class
53
60
57.0
6
4th Class
54
60
57.7
6
5th Class
52
60
57.0
6
6th Class
49
60
55.3
6
Total
22
458
342.4
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).