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
25.91
2025/26
Mainstream classes
11
2025/26
Largest class group
31
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
107
4
26.75
35
1
2007/08
115
4
28.75
33
2
2008/09
129
5
25.80
30
1
2009/10
126
5
25.20
29
0
2010/11
145
5
29.00
31
3
2011/12
183
7
26.14
31
2
2012/13
213
8
26.62
31
3
2013/14
244
9
27.11
32
3
2014/15
283
10
28.30
33
4
2015/16
272
10
27.20
33
3
2016/17
265
10
26.50
32
2
2017/18
281
10
28.10
32
4
2019/20
280
11
25.45
30
2
2020/21
286
11
26.00
33
4
2021/22
281
11
25.55
30
2
2022/23
271
11
24.64
29
0
2023/24
278
11
25.27
31
2
2024/25
281
11
25.55
30
1
2025/26
285
11
25.91
31
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2014/15: 244 in 2013/14 → 283, +39 pupils.
Biggest loss in a single year: 1979/80: 80 in 1978/79 → 65, -15 pupils.
Largest single-class increase: 6th Class in 2021/22 (28 → 57, +29).
Largest single-class decrease: 5th Class in 2021/22 (60 → 30, -30).
Largest cohort-step gain: SI → 1st in 2024/25 (51 → 54, +3).
Largest cohort-step loss: 3rd → 4th in 2021/22 (32 → 28, -4).
Overall: 68 (1974/75) → 285 (2025/26), 217.
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
52
35.8
6
Senior Infants
28
51
36.3
6
1st Class
28
54
36.7
6
2nd Class
28
54
36.5
6
3rd Class
28
47
33.3
6
4th Class
27
48
33.2
6
5th Class
28
60
34.8
6
6th Class
28
57
33.7
6
Total
42
287
145.6
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).