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
23.25
2025/26
Mainstream classes
16
2025/26
Largest class group
25
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
434
16
27.12
30
1
2007/08
421
16
26.31
30
2
2008/09
425
16
26.56
30
1
2009/10
432
16
27.00
30
1
2010/11
434
16
27.12
30
1
2011/12
434
16
27.12
29
0
2012/13
439
16
27.44
28
0
2013/14
437
16
27.31
29
0
2014/15
431
16
26.94
28
0
2015/16
430
16
26.88
28
0
2016/17
437
16
27.31
28
0
2017/18
432
16
27.00
28
0
2019/20
427
16
26.69
28
0
2020/21
423
16
26.44
28
0
2021/22
411
16
25.69
28
0
2022/23
399
16
24.94
28
0
2023/24
388
16
24.25
28
0
2024/25
372
16
23.25
27
0
2025/26
372
16
23.25
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1998/99: 28 in 1997/98 → 92, +64 pupils.
Biggest loss in a single year: 2024/25: 400 in 2023/24 → 384, -16 pupils.
Largest single-class increase: Senior Infants in 2025/26 (38 → 49, +11).
Largest single-class decrease: Senior Infants in 2024/25 (52 → 38, -14).
Largest cohort-step gain: JI → SI in 2025/26 (44 → 49, +5).
Largest cohort-step loss: JI → SI in 2022/23 (53 → 49, -4).
Overall: 28 (1997/98) → 384 (2025/26), 356.
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
40
53
47.0
6
Senior Infants
38
52
47.7
6
1st Class
41
51
46.5
6
2nd Class
45
56
49.7
6
3rd Class
45
53
49.7
6
4th Class
49
54
50.8
6
5th Class
49
55
52.2
6
6th Class
50
56
53.0
6
Total
28
452
377.0
29
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).