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
16.87
2025/26
Mainstream classes
15
2025/26
Largest class group
28
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
255
10
25.50
31
2
2007/08
255
10
25.50
35
3
2008/09
255
11
23.18
29
0
2009/10
256
10
25.60
32
1
2010/11
249
11
22.64
29
0
2011/12
258
10
25.80
34
3
2012/13
265
10
26.50
34
4
2013/14
274
10
27.40
35
4
2014/15
262
10
26.20
32
2
2015/16
267
10
26.70
33
1
2016/17
276
10
27.60
29
0
2017/18
282
11
25.64
29
0
2019/20
279
13
21.46
26
0
2020/21
274
12
22.83
30
2
2021/22
267
12
22.25
32
1
2022/23
274
15
18.27
26
0
2023/24
273
16
17.06
23
0
2024/25
253
16
15.81
20
0
2025/26
253
15
16.87
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 158 in 1978/79 → 283, +125 pupils.
Biggest loss in a single year: 1994/95: 307 in 1993/94 → 276, -31 pupils.
Largest single-class increase: 6th Class in 2022/23 (37 → 52, +15).
Largest single-class decrease: 3rd Class in 2021/22 (42 → 28, -14).
Largest cohort-step gain: SI → 1st in 2023/24 (27 → 35, +8).
Largest cohort-step loss: JI → SI in 2022/23 (29 → 27, -2).
Overall: 147 (1975/76) → 288 (2025/26), 141.
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
27
34
29.5
6
Senior Infants
24
36
30.2
6
1st Class
25
40
31.8
6
2nd Class
27
38
31.0
6
3rd Class
27
42
33.7
6
4th Class
26
47
36.8
6
5th Class
32
48
39.2
6
6th Class
32
52
41.3
6
Total
147
326
268.0
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).