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
19.31
2025/26
Mainstream classes
16
2025/26
Largest class group
22
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
357
17
21.00
30
1
2007/08
401
19
21.11
34
1
2008/09
409
20
20.45
24
0
2009/10
413
20
20.65
24
0
2010/11
387
20
19.35
24
0
2011/12
391
19
20.58
28
0
2012/13
356
18
19.78
28
0
2013/14
354
17
20.82
28
0
2014/15
321
17
18.88
27
0
2015/16
294
15
19.60
27
0
2016/17
290
14
20.71
26
0
2017/18
289
14
20.64
26
0
2019/20
299
14
21.36
25
0
2020/21
303
14
21.64
27
0
2021/22
299
15
19.93
24
0
2022/23
310
15
20.67
24
0
2023/24
325
16
20.31
24
0
2024/25
307
16
19.19
22
0
2025/26
309
16
19.31
22
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 384 in 2006/07 → 422, +38 pupils.
Biggest loss in a single year: 1981/82: 464 in 1980/81 → 389, -75 pupils.
Largest single-class increase: 6th Class in 2023/24 (30 → 46, +16).
Largest single-class decrease: Junior Infants in 2021/22 (45 → 33, -12).
Largest cohort-step gain: 1st → 2nd in 2025/26 (38 → 43, +5).
Largest cohort-step loss: JI → SI in 2024/25 (40 → 37, -3).
Overall: 686 (1974/75) → 315 (2025/26), -371.
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
29
45
36.2
6
Senior Infants
35
45
38.8
6
1st Class
37
45
39.5
6
2nd Class
37
44
40.3
6
3rd Class
35
45
41.5
6
4th Class
33
45
40.3
6
5th Class
32
45
39.3
6
6th Class
30
46
38.5
6
Total
252
711
374.6
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).