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
22.87
2025/26
Mainstream classes
15
2025/26
Largest class group
34
2025/26
Classes with 30+ pupils
3
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
194
7
27.71
33
2
2007/08
205
7
29.29
36
3
2008/09
216
8
27.00
32
2
2009/10
215
8
26.88
31
1
2010/11
223
8
27.88
31
2
2011/12
253
9
28.11
31
4
2012/13
280
10
28.00
33
1
2013/14
298
11
27.09
33
1
2014/15
334
12
27.83
34
2
2015/16
363
13
27.92
34
2
2016/17
395
14
28.21
33
4
2017/18
416
15
27.73
32
3
2019/20
436
16
27.25
31
4
2020/21
417
16
26.06
32
2
2021/22
389
16
24.31
32
2
2022/23
406
16
25.38
31
4
2023/24
394
16
24.62
32
5
2024/25
362
16
22.62
32
1
2025/26
343
15
22.87
34
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1976/77: 433 in 1975/76 → 470, +37 pupils.
Biggest loss in a single year: 1993/94: 444 in 1982/83 → 296, -148 pupils.
Largest single-class increase: Junior Infants in 2022/23 (29 → 48, +19).
Largest single-class decrease: 3rd Class in 2024/25 (61 → 37, -24).
Largest cohort-step gain: JI → SI in 2022/23 (29 → 35, +6).
Largest cohort-step loss: 3rd → 4th in 2024/25 (61 → 57, -4).
Overall: 401 (1974/75) → 349 (2025/26), -52.
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
29
48
36.7
6
Senior Infants
32
54
41.0
6
1st Class
35
55
44.7
6
2nd Class
36
59
46.5
6
3rd Class
35
61
49.3
6
4th Class
39
62
52.5
6
5th Class
51
63
57.3
6
6th Class
51
61
58.2
6
Total
191
489
331.2
42
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).