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
24.44
2025/26
Mainstream classes
16
2025/26
Largest class group
31
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
282
12
23.50
29
0
2007/08
290
12
24.17
30
1
2008/09
302
13
23.23
29
0
2009/10
272
12
22.67
28
0
2010/11
262
11
23.82
29
0
2011/12
273
11
24.82
31
2
2012/13
263
10
26.30
31
2
2013/14
296
11
26.91
31
1
2014/15
325
12
27.08
30
1
2015/16
330
13
25.38
31
1
2016/17
337
13
25.92
30
1
2017/18
347
13
26.69
31
1
2019/20
402
15
26.80
34
5
2020/21
416
16
26.00
34
4
2021/22
406
16
25.38
34
3
2022/23
416
17
24.47
33
1
2023/24
416
17
24.47
33
1
2024/25
408
17
24.00
32
2
2025/26
391
16
24.44
31
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2013/14: 263 in 2012/13 → 299, +36 pupils.
Biggest loss in a single year: 1993/94: 531 in 1983/84 → 439, -92 pupils.
Largest single-class increase: 1st Class in 2022/23 (40 → 59, +19).
Largest single-class decrease: 5th Class in 2021/22 (68 → 52, -16).
Largest cohort-step gain: JI → SI in 2022/23 (47 → 54, +7).
Largest cohort-step loss: SI → 1st in 2024/25 (49 → 42, -7).
Overall: 565 (1974/75) → 409 (2025/26), -156.
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
41
55
49.0
6
Senior Infants
38
54
47.5
6
1st Class
40
59
49.3
6
2nd Class
43
58
50.2
6
3rd Class
43
59
52.3
6
4th Class
44
62
53.7
6
5th Class
43
68
55.0
6
6th Class
44
67
55.0
6
Total
263
599
400.5
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).