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
23.38
2025/26
Mainstream classes
13
2025/26
Largest class group
32
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
218
8
27.25
34
1
2007/08
223
8
27.88
32
2
2008/09
249
9
27.67
33
3
2009/10
250
9
27.78
32
3
2010/11
247
9
27.44
33
3
2011/12
252
9
28.00
35
5
2012/13
252
9
28.00
36
4
2013/14
256
10
25.60
34
4
2014/15
265
10
26.50
34
4
2015/16
291
11
26.45
35
4
2016/17
292
11
26.55
35
4
2017/18
294
11
26.73
34
3
2019/20
295
12
24.58
32
2
2020/21
294
12
24.50
34
2
2021/22
281
12
23.42
33
2
2022/23
280
12
23.33
33
2
2023/24
275
12
22.92
31
2
2024/25
305
13
23.46
33
3
2025/26
304
13
23.38
32
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2002/03: 172 in 2001/02 → 219, +47 pupils.
Biggest loss in a single year: 1993/94: 251 in 1983/84 → 194, -57 pupils.
Largest single-class increase: 5th Class in 2024/25 (31 → 55, +24).
Largest single-class decrease: 1st Class in 2021/22 (51 → 28, -23).
Largest cohort-step gain: 1st → 2nd in 2024/25 (34 → 40, +6).
Largest cohort-step loss: 3rd → 4th in 2025/26 (34 → 32, -2).
Overall: 174 (1974/75) → 322 (2025/26), 148.
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
25
39
32.7
6
Senior Infants
25
39
32.8
6
1st Class
26
51
36.5
6
2nd Class
29
50
36.8
6
3rd Class
30
50
37.0
6
4th Class
31
51
38.5
6
5th Class
31
55
40.2
6
6th Class
33
56
42.8
6
Total
159
326
243.3
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).