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
23.00
2025/26
Mainstream classes
12
2025/26
Largest class group
33
2025/26
Classes with 30+ pupils
1
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
251
9
27.89
34
4
2007/08
254
9
28.22
35
5
2008/09
259
9
28.78
36
5
2009/10
245
9
27.22
36
4
2010/11
248
9
27.56
34
5
2011/12
255
9
28.33
34
4
2012/13
274
9
30.44
33
6
2013/14
267
10
26.70
34
4
2014/15
246
10
24.60
31
2
2015/16
247
9
27.44
35
4
2016/17
260
9
28.89
37
4
2017/18
264
10
26.40
34
3
2019/20
279
11
25.36
35
4
2020/21
255
11
23.18
28
0
2021/22
254
10
25.40
35
3
2022/23
300
12
25.00
37
3
2023/24
294
12
24.50
34
2
2024/25
282
12
23.50
29
0
2025/26
276
12
23.00
33
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2022/23: 254 in 2021/22 → 300, +46 pupils.
Biggest loss in a single year: 2003/04: 291 in 2002/03 → 267, -24 pupils.
Largest single-class increase: 3rd Class in 2022/23 (26 → 54, +28).
Largest single-class decrease: 5th Class in 2025/26 (54 → 33, -21).
Largest cohort-step gain: 2nd → 3rd in 2022/23 (38 → 54, +16).
Largest cohort-step loss: JI → SI in 2024/25 (34 → 30, -4).
Overall: 291 (1979/80) → 276 (2025/26), -15.
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
36
30.7
6
Senior Infants
26
44
31.0
6
1st Class
28
45
34.0
6
2nd Class
28
46
34.5
6
3rd Class
26
54
37.5
6
4th Class
29
52
35.3
6
5th Class
29
54
36.3
6
6th Class
29
53
37.5
6
Total
246
300
273.4
37
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).