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
24.62
2025/26
Mainstream classes
16
2025/26
Largest class group
28
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+
2007/08
25
2
12.50
13
0
2008/09
59
3
19.67
25
0
2009/10
150
6
25.00
29
0
2010/11
264
10
26.40
28
0
2011/12
322
12
26.83
29
0
2012/13
372
14
26.57
29
0
2013/14
427
16
26.69
29
0
2014/15
438
16
27.38
34
3
2015/16
444
16
27.75
31
2
2016/17
442
16
27.62
30
2
2017/18
442
16
27.62
29
0
2019/20
430
16
26.88
29
0
2020/21
422
16
26.38
29
0
2021/22
424
16
26.50
29
0
2022/23
414
16
25.88
28
0
2023/24
409
17
24.06
28
0
2024/25
393
17
23.12
28
0
2025/26
394
16
24.62
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2010/11: 150 in 2009/10 → 264, +114 pupils.
Biggest loss in a single year: 2024/25: 409 in 2023/24 → 397, -12 pupils.
Largest single-class increase: Senior Infants in 2021/22 (46 → 55, +9).
Largest single-class decrease: 5th Class in 2022/23 (56 → 47, -9).
Largest cohort-step gain: 5th → 6th in 2023/24 (47 → 51, +4).
Largest cohort-step loss: SI → 1st in 2024/25 (50 → 45, -5).
Overall: 25 (2007/08) → 400 (2025/26), 375.
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
56
51.7
6
Senior Infants
46
55
50.3
6
1st Class
45
56
49.7
6
2nd Class
46
56
50.8
6
3rd Class
48
52
51.0
6
4th Class
48
56
52.2
6
5th Class
47
56
51.8
6
6th Class
50
57
53.5
6
Total
25
444
353.8
19
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).