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
22.65
2025/26
Mainstream classes
17
2025/26
Largest class group
29
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
337
12
28.08
33
3
2007/08
340
12
28.33
33
5
2008/09
364
13
28.00
32
5
2009/10
374
13
28.77
32
6
2010/11
367
14
26.21
31
4
2011/12
373
14
26.64
31
3
2012/13
365
14
26.07
31
1
2013/14
357
13
27.46
33
3
2014/15
343
13
26.38
33
3
2015/16
321
13
24.69
27
0
2016/17
296
12
24.67
27
0
2017/18
292
11
26.55
32
3
2019/20
282
11
25.64
34
3
2020/21
268
12
22.33
35
4
2021/22
259
14
18.50
29
0
2022/23
268
13
20.62
37
2
2023/24
299
15
19.93
29
0
2024/25
350
17
20.59
25
0
2025/26
385
17
22.65
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2024/25: 299 in 2023/24 → 350, +51 pupils.
Biggest loss in a single year: 1993/94: 536 in 1983/84 → 478, -58 pupils.
Largest single-class increase: 4th Class in 2025/26 (38 → 58, +20).
Largest single-class decrease: 6th Class in 2021/22 (83 → 44, -39).
Largest cohort-step gain: JI → SI in 2023/24 (32 → 43, +11).
Largest cohort-step loss: SI → 1st in 2021/22 (32 → 30, -2).
Overall: 460 (1974/75) → 385 (2025/26), -75.
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
26
46
35.2
6
Senior Infants
30
49
38.2
6
1st Class
24
47
37.2
6
2nd Class
29
52
39.4
5
3rd Class
30
49
37.7
6
4th Class
29
58
38.8
6
5th Class
28
46
38.3
6
6th Class
29
83
46.7
6
Total
259
564
372.3
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).