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
22.25
2025/26
Mainstream classes
12
2025/26
Largest class group
31
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
261
10
26.10
35
5
2007/08
266
10
26.60
35
4
2008/09
269
10
26.90
33
3
2009/10
267
10
26.70
34
3
2010/11
269
10
26.90
34
6
2011/12
275
10
27.50
38
5
2012/13
267
10
26.70
33
4
2013/14
271
10
27.10
33
5
2014/15
276
10
27.60
33
4
2015/16
278
10
27.80
33
4
2016/17
287
11
26.09
34
3
2017/18
277
11
25.18
33
3
2019/20
271
11
24.64
33
2
2020/21
275
11
25.00
33
2
2021/22
273
11
24.82
30
1
2022/23
285
11
25.91
33
1
2023/24
299
11
27.18
32
2
2024/25
280
13
21.54
32
2
2025/26
267
12
22.25
31
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2001/02: 200 in 2000/01 → 225, +25 pupils.
Biggest loss in a single year: 2024/25: 311 in 2023/24 → 292, -19 pupils.
Largest single-class increase: 1st Class in 2022/23 (30 → 49, +19).
Largest single-class decrease: 1st Class in 2023/24 (49 → 31, -18).
Largest cohort-step gain: 1st → 2nd in 2025/26 (36 → 41, +5).
Largest cohort-step loss: SI → 1st in 2024/25 (40 → 36, -4).
Overall: 142 (1975/76) → 278 (2025/26), 136.
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
24
44
33.5
6
Senior Infants
26
46
35.2
6
1st Class
30
49
36.8
6
2nd Class
31
49
37.2
6
3rd Class
32
47
35.8
6
4th Class
28
48
35.7
6
5th Class
28
37
33.5
6
6th Class
29
38
34.0
6
Total
142
311
239.9
41
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).