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
22.56
2025/26
Mainstream classes
16
2025/26
Largest class group
31
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
278
10
27.80
33
4
2007/08
283
11
25.73
32
3
2008/09
320
12
26.67
32
3
2009/10
321
12
26.75
32
3
2010/11
324
12
27.00
33
3
2011/12
326
12
27.17
33
2
2012/13
359
13
27.62
32
2
2013/14
388
14
27.71
32
5
2014/15
426
15
28.40
33
8
2015/16
431
16
26.94
32
4
2016/17
438
16
27.38
31
4
2017/18
443
17
26.06
32
5
2019/20
443
17
26.06
32
6
2020/21
436
17
25.65
32
5
2021/22
426
17
25.06
32
3
2022/23
421
17
24.76
35
4
2023/24
393
17
23.12
34
2
2024/25
368
16
23.00
28
0
2025/26
361
16
22.56
31
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2014/15: 388 in 2013/14 → 426, +38 pupils.
Biggest loss in a single year: 2023/24: 433 in 2022/23 → 405, -28 pupils.
Largest single-class increase: Junior Infants in 2022/23 (38 → 56, +18).
Largest single-class decrease: Junior Infants in 2023/24 (56 → 37, -19).
Largest cohort-step gain: 4th → 5th in 2025/26 (56 → 63, +7).
Largest cohort-step loss: JI → SI in 2023/24 (56 → 53, -3).
Overall: 87 (1974/75) → 373 (2025/26), 286.
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
32
56
39.7
6
Senior Infants
39
53
43.7
6
1st Class
40
52
45.2
6
2nd Class
40
58
47.7
6
3rd Class
42
64
50.8
6
4th Class
44
64
54.7
6
5th Class
51
71
61.2
6
6th Class
51
76
61.2
6
Total
87
455
279.7
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).