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
22.19
2025/26
Mainstream classes
16
2025/26
Largest class group
29
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
304
11
27.64
36
4
2007/08
331
12
27.58
36
4
2008/09
360
13
27.69
34
4
2009/10
360
13
27.69
34
3
2010/11
385
14
27.50
35
4
2011/12
410
15
27.33
33
4
2012/13
443
16
27.69
33
3
2013/14
445
16
27.81
32
3
2014/15
442
16
27.62
32
4
2015/16
432
16
27.00
32
3
2016/17
425
16
26.56
33
2
2017/18
426
16
26.62
32
3
2019/20
412
16
25.75
30
2
2020/21
406
16
25.38
29
0
2021/22
395
16
24.69
28
0
2022/23
402
16
25.12
29
0
2023/24
393
17
23.12
28
0
2024/25
365
16
22.81
28
0
2025/26
355
16
22.19
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2004/05: 201 in 2003/04 → 242, +41 pupils.
Biggest loss in a single year: 1995/96: 231 in 1994/95 → 203, -28 pupils.
Largest single-class increase: Junior Infants in 2025/26 (27 → 39, +12).
Largest single-class decrease: Senior Infants in 2023/24 (51 → 37, -14).
Largest cohort-step gain: JI → SI in 2022/23 (41 → 51, +10).
Largest cohort-step loss: JI → SI in 2024/25 (38 → 33, -5).
Overall: 151 (1974/75) → 373 (2025/26), 222.
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
27
46
37.3
6
Senior Infants
28
52
41.7
6
1st Class
37
58
48.7
6
2nd Class
41
56
49.7
6
3rd Class
46
57
52.7
6
4th Class
48
56
52.7
6
5th Class
47
57
53.3
6
6th Class
49
58
54.5
6
Total
151
445
292.2
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).