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
26.16
2025/26
Mainstream classes
19
2025/26
Largest class group
33
2025/26
Classes with 30+ pupils
5
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
4
2007/08
439
16
27.44
31
3
2008/09
443
16
27.69
30
4
2009/10
442
16
27.62
32
2
2010/11
434
16
27.12
30
1
2011/12
425
16
26.56
31
2
2012/13
442
16
27.62
31
6
2013/14
437
16
27.31
30
6
2014/15
432
16
27.00
30
4
2015/16
421
16
26.31
30
2
2016/17
408
16
25.50
29
0
2017/18
429
15
28.60
35
3
2019/20
444
17
26.12
30
1
2020/21
449
17
26.41
30
3
2021/22
464
18
25.78
31
6
2022/23
456
19
24.00
32
4
2023/24
461
19
24.26
32
3
2024/25
474
19
24.95
31
5
2025/26
497
19
26.16
33
5
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2025/26: 474 in 2024/25 → 503, +29 pupils.
Biggest loss in a single year: 1995/96: 409 in 1994/95 → 383, -26 pupils.
Largest single-class increase: Senior Infants in 2021/22 (45 → 66, +21).
Largest single-class decrease: 2nd Class in 2022/23 (61 → 48, -13).
Largest cohort-step gain: JI → SI in 2021/22 (59 → 66, +7).
Largest cohort-step loss: SI → 1st in 2022/23 (66 → 64, -2).
Overall: 368 (1974/75) → 503 (2025/26), 135.
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
50
69
59.5
6
Senior Infants
45
73
57.7
6
1st Class
48
64
56.2
6
2nd Class
48
65
58.0
6
3rd Class
51
67
60.0
6
4th Class
51
70
59.5
6
5th Class
52
61
58.0
6
6th Class
56
60
59.0
6
Total
368
503
421.0
43
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).