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
22.62
2025/26
Mainstream classes
16
2025/26
Largest class group
30
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
235
8
29.38
33
4
2007/08
228
8
28.50
31
2
2008/09
225
8
28.12
31
2
2009/10
232
8
29.00
31
3
2010/11
229
8
28.62
31
2
2011/12
233
8
29.12
30
4
2012/13
260
9
28.89
32
5
2013/14
279
10
27.90
33
3
2014/15
308
11
28.00
33
4
2015/16
343
12
28.58
33
4
2016/17
365
13
28.08
32
2
2017/18
393
14
28.07
32
4
2019/20
417
16
26.06
29
0
2020/21
397
16
24.81
30
1
2021/22
380
16
23.75
30
1
2022/23
380
16
23.75
30
1
2023/24
357
16
22.31
28
0
2024/25
375
16
23.44
31
4
2025/26
362
16
22.62
30
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2015/16: 308 in 2014/15 → 343, +35 pupils.
Biggest loss in a single year: 2023/24: 386 in 2022/23 → 363, -23 pupils.
Largest single-class increase: 1st Class in 2024/25 (37 → 51, +14).
Largest single-class decrease: 3rd Class in 2023/24 (54 → 42, -12).
Largest cohort-step gain: SI → 1st in 2024/25 (41 → 51, +10).
Largest cohort-step loss: JI → SI in 2023/24 (42 → 41, -1).
Overall: 125 (1974/75) → 374 (2025/26), 249.
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
42
36.3
6
Senior Infants
33
43
39.3
6
1st Class
37
51
44.0
6
2nd Class
38
56
47.0
6
3rd Class
42
54
47.7
6
4th Class
44
59
51.8
6
5th Class
50
61
54.8
6
6th Class
54
60
57.5
6
Total
125
423
245.9
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).