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
21.92
2025/26
Mainstream classes
13
2025/26
Largest class group
28
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
236
9
26.22
33
3
2007/08
227
9
25.22
35
3
2008/09
217
8
27.12
38
3
2009/10
219
8
27.38
38
3
2010/11
211
8
26.38
33
4
2011/12
210
8
26.25
37
4
2012/13
195
8
24.38
36
2
2013/14
208
7
29.71
37
3
2014/15
225
8
28.12
36
3
2015/16
259
9
28.78
37
4
2016/17
265
10
26.50
35
3
2017/18
280
10
28.00
36
5
2019/20
281
11
25.55
30
1
2020/21
273
11
24.82
29
0
2021/22
243
11
22.09
31
1
2022/23
265
11
24.09
27
0
2023/24
291
12
24.25
32
1
2024/25
303
12
25.25
29
0
2025/26
285
13
21.92
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2015/16: 225 in 2014/15 → 259, +34 pupils.
Biggest loss in a single year: 1993/94: 577 in 1982/83 → 386, -191 pupils.
Largest single-class increase: 1st Class in 2024/25 (43 → 54, +11).
Largest single-class decrease: 6th Class in 2021/22 (58 → 41, -17).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (34 → 44, +10).
Largest cohort-step loss: 1st → 2nd in 2025/26 (54 → 50, -4).
Overall: 929 (1974/75) → 297 (2025/26), -632.
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
0
0
0.0
1
Senior Infants
0
0
0.0
1
1st Class
31
54
41.3
6
2nd Class
34
50
43.3
6
3rd Class
43
48
45.0
6
4th Class
43
52
48.0
6
5th Class
40
57
48.2
6
6th Class
41
59
52.8
6
Total
195
952
375.8
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).