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
25.62
2025/26
Mainstream classes
16
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
2
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
323
11
29.36
33
7
2007/08
351
13
27.00
38
2
2008/09
380
14
27.14
33
2
2009/10
383
14
27.36
34
2
2010/11
396
14
28.29
35
5
2011/12
409
15
27.27
35
5
2012/13
413
15
27.53
36
6
2013/14
416
15
27.73
32
9
2014/15
421
15
28.07
31
8
2015/16
430
16
26.88
31
7
2016/17
436
16
27.25
31
8
2017/18
444
16
27.75
31
7
2019/20
467
18
25.94
31
5
2020/21
452
18
25.11
30
1
2021/22
438
18
24.33
29
0
2022/23
422
18
23.44
30
2
2023/24
421
17
24.76
30
1
2024/25
406
17
23.88
30
1
2025/26
410
16
25.62
30
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1994/95: 75 in 1993/94 → 114, +39 pupils.
Biggest loss in a single year: 2022/23: 438 in 2021/22 → 422, -16 pupils.
Largest single-class increase: Junior Infants in 2025/26 (38 → 59, +21).
Largest single-class decrease: Junior Infants in 2024/25 (55 → 38, -17).
Largest cohort-step gain: JI → SI in 2025/26 (38 → 42, +4).
Largest cohort-step loss: JI → SI in 2021/22 (54 → 50, -4).
Overall: 75 (1993/94) → 410 (2025/26), 335.
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
38
59
49.8
6
Senior Infants
42
60
50.7
6
1st Class
44
60
52.7
6
2nd Class
43
60
52.8
6
3rd Class
48
59
54.2
6
4th Class
48
58
54.7
6
5th Class
52
57
55.2
6
6th Class
52
57
54.8
6
Total
75
467
338.6
33
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).