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
23.78
2025/26
Mainstream classes
18
2025/26
Largest class group
27
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
41
2
20.50
25
0
2009/10
120
5
24.00
27
0
2010/11
152
6
25.33
31
2
2011/12
211
8
26.38
31
2
2012/13
271
10
27.10
30
3
2013/14
343
13
26.38
30
3
2014/15
395
15
26.33
31
4
2015/16
415
16
25.94
32
3
2016/17
431
16
26.94
30
3
2017/18
425
16
26.56
30
1
2019/20
453
18
25.17
29
0
2020/21
455
18
25.28
30
2
2021/22
457
18
25.39
31
3
2022/23
445
18
24.72
31
3
2023/24
431
18
23.94
28
0
2024/25
429
18
23.83
28
0
2025/26
428
18
23.78
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2009/10: 41 in 2008/09 → 120, +79 pupils.
Biggest loss in a single year: 2023/24: 457 in 2022/23 → 443, -14 pupils.
Largest single-class increase: 5th Class in 2025/26 (49 → 77, +28).
Largest single-class decrease: 5th Class in 2021/22 (78 → 60, -18).
Largest cohort-step gain: SI → 1st in 2023/24 (57 → 65, +8).
Largest cohort-step loss: 3rd → 4th in 2023/24 (53 → 47, -6).
Overall: 41 (2008/09) → 440 (2025/26), 399.
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
43
56
50.8
6
Senior Infants
49
61
53.3
6
1st Class
47
65
55.0
6
2nd Class
48
63
55.8
6
3rd Class
49
67
57.0
6
4th Class
47
70
55.5
6
5th Class
49
78
61.2
6
6th Class
50
77
58.2
6
Total
41
469
360.9
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).