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
19.14
2025/26
Mainstream classes
14
2025/26
Largest class group
25
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
235
8
29.38
34
5
2007/08
242
9
26.89
35
4
2008/09
240
9
26.67
33
5
2009/10
254
9
28.22
34
6
2010/11
258
10
25.80
34
4
2011/12
254
10
25.40
30
2
2012/13
265
10
26.50
34
2
2013/14
271
10
27.10
34
2
2014/15
279
10
27.90
36
3
2015/16
283
11
25.73
32
1
2016/17
300
11
27.27
34
2
2017/18
300
12
25.00
29
0
2019/20
311
12
25.92
29
0
2020/21
320
13
24.62
30
1
2021/22
313
16
19.56
30
1
2022/23
338
15
22.53
33
2
2023/24
334
15
22.27
28
0
2024/25
311
15
20.73
27
0
2025/26
268
14
19.14
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 211 in 1983/84 → 264, +53 pupils.
Biggest loss in a single year: 2025/26: 329 in 2024/25 → 292, -37 pupils.
Largest single-class increase: 4th Class in 2022/23 (38 → 52, +14).
Largest single-class decrease: 5th Class in 2024/25 (55 → 39, -16).
Largest cohort-step gain: 3rd → 4th in 2022/23 (43 → 52, +9).
Largest cohort-step loss: JI → SI in 2023/24 (28 → 21, -7).
Overall: 143 (1974/75) → 292 (2025/26), 149.
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
28
44
34.7
6
Senior Infants
21
44
34.3
6
1st Class
23
45
35.5
6
2nd Class
26
48
38.8
6
3rd Class
34
48
42.8
6
4th Class
38
52
45.5
6
5th Class
37
55
44.2
6
6th Class
35
52
42.3
6
Total
143
356
251.3
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).