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
19.20
2025/26
Mainstream classes
15
2025/26
Largest class group
32
2025/26
Classes with 30+ pupils
1
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
118
6
19.67
25
0
2007/08
125
6
20.83
26
0
2008/09
121
6
20.17
25
0
2009/10
113
6
18.83
24
0
2010/11
116
6
19.33
27
0
2011/12
116
6
19.33
32
1
2012/13
157
6
26.17
37
2
2013/14
213
8
26.62
41
2
2014/15
235
11
21.36
27
0
2015/16
250
11
22.73
30
1
2016/17
272
12
22.67
33
1
2017/18
290
15
19.33
26
0
2019/20
286
16
17.88
25
0
2020/21
267
19
14.05
17
0
2021/22
263
16
16.44
22
0
2022/23
278
16
17.38
21
0
2023/24
306
16
19.12
23
0
2024/25
318
16
19.88
24
0
2025/26
288
15
19.20
32
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2013/14: 169 in 2012/13 → 225, +56 pupils.
Biggest loss in a single year: 1993/94: 477 in 1982/83 → 196, -281 pupils.
Largest single-class increase: Senior Infants in 2024/25 (38 → 50, +12).
Largest single-class decrease: 5th Class in 2021/22 (47 → 36, -11).
Largest cohort-step gain: 1st → 2nd in 2023/24 (39 → 46, +7).
Largest cohort-step loss: JI → SI in 2025/26 (48 → 39, -9).
Overall: 809 (1975/76) → 312 (2025/26), -497.
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
31
48
41.2
6
Senior Infants
33
50
40.0
6
1st Class
34
49
41.0
6
2nd Class
31
46
38.2
6
3rd Class
29
44
36.8
6
4th Class
27
41
35.2
6
5th Class
31
47
37.5
6
6th Class
33
48
40.3
6
Total
118
809
270.2
38
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).