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
23.85
2025/26
Mainstream classes
13
2025/26
Largest class group
32
2025/26
Classes with 30+ pupils
3
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
194
8
24.25
29
0
2007/08
196
8
24.50
28
0
2008/09
208
8
26.00
31
1
2009/10
203
8
25.38
31
1
2010/11
205
8
25.62
30
1
2011/12
210
8
26.25
31
2
2012/13
215
8
26.88
31
2
2013/14
232
9
25.78
31
1
2014/15
240
9
26.67
32
1
2015/16
250
9
27.78
29
0
2016/17
249
9
27.67
33
2
2017/18
266
10
26.60
33
2
2019/20
297
11
27.00
34
2
2020/21
313
11
28.45
34
7
2021/22
299
12
24.92
34
3
2022/23
308
12
25.67
34
2
2023/24
317
13
24.38
33
1
2024/25
320
13
24.62
31
2
2025/26
310
13
23.85
32
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 19 in 1983/84 → 92, +73 pupils.
Biggest loss in a single year: 2021/22: 313 in 2020/21 → 299, -14 pupils.
Largest single-class increase: Senior Infants in 2023/24 (28 → 41, +13).
Largest single-class decrease: Senior Infants in 2022/23 (44 → 28, -16).
Largest cohort-step gain: SI → 1st in 2021/22 (44 → 46, +2).
Largest cohort-step loss: SI → 1st in 2025/26 (42 → 40, -2).
Overall: 11 (1982/83) → 310 (2025/26), 299.
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
29
44
37.2
6
Senior Infants
28
44
39.7
6
1st Class
28
46
39.7
6
2nd Class
29
48
40.0
6
3rd Class
29
48
39.0
6
4th Class
34
47
40.0
6
5th Class
33
47
38.2
6
6th Class
32
43
37.5
6
Total
11
320
203.0
35
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).