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
20.69
2025/26
Mainstream classes
16
2025/26
Largest class group
24
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
261
13
20.08
26
0
2007/08
261
13
20.08
27
0
2008/09
267
13
20.54
28
0
2009/10
285
14
20.36
29
0
2010/11
299
15
19.93
24
0
2011/12
314
15
20.93
35
1
2012/13
326
15
21.73
34
1
2013/14
323
15
21.53
38
1
2014/15
327
15
21.80
33
1
2015/16
323
14
23.07
31
2
2016/17
328
14
23.43
31
2
2017/18
343
15
22.87
30
1
2019/20
340
15
22.67
32
1
2020/21
341
16
21.31
24
0
2021/22
325
16
20.31
24
0
2022/23
316
16
19.75
23
0
2023/24
305
16
19.06
24
0
2024/25
330
16
20.62
23
0
2025/26
331
16
20.69
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 297 in 1978/79 → 328, +31 pupils.
Biggest loss in a single year: 1993/94: 351 in 1982/83 → 294, -57 pupils.
Largest single-class increase: 4th Class in 2025/26 (35 → 45, +10).
Largest single-class decrease: 4th Class in 2021/22 (47 → 36, -11).
Largest cohort-step gain: 4th → 5th in 2024/25 (36 → 42, +6).
Largest cohort-step loss: JI → SI in 2023/24 (42 → 35, -7).
Overall: 352 (1974/75) → 331 (2025/26), -21.
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
42
46
43.3
6
Senior Infants
35
44
40.8
6
1st Class
38
46
41.8
6
2nd Class
38
45
41.0
6
3rd Class
35
44
39.2
6
4th Class
35
47
39.5
6
5th Class
34
44
39.0
6
6th Class
34
44
40.0
6
Total
238
352
305.3
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).