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
15.71
2025/26
Mainstream classes
21
2025/26
Largest class group
20
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
385
19
20.26
26
0
2007/08
376
19
19.79
26
0
2008/09
402
20
20.10
27
0
2009/10
381
20
19.05
24
0
2010/11
396
20
19.80
24
0
2011/12
487
21
23.19
34
2
2012/13
506
21
24.10
31
3
2013/14
488
22
22.18
28
0
2014/15
459
22
20.86
24
0
2015/16
450
22
20.45
26
0
2016/17
436
22
19.82
25
0
2017/18
422
21
20.10
26
0
2019/20
388
20
19.40
25
0
2020/21
384
19
20.21
26
0
2021/22
365
19
19.21
25
0
2022/23
376
22
17.09
22
0
2023/24
356
22
16.18
21
0
2024/25
349
22
15.86
22
0
2025/26
330
21
15.71
20
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 446 in 2007/08 → 493, +47 pupils.
Biggest loss in a single year: 1998/99: 541 in 1997/98 → 503, -38 pupils.
Largest single-class increase: 1st Class in 2024/25 (35 → 52, +17).
Largest single-class decrease: 5th Class in 2024/25 (56 → 42, -14).
Largest cohort-step gain: JI → SI in 2023/24 (41 → 48, +7).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (44 → 39, -5).
Overall: 593 (1993/94) → 330 (2025/26), -263.
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
33
45
39.3
6
Senior Infants
40
48
43.0
6
1st Class
35
52
44.3
6
2nd Class
36
56
45.5
6
3rd Class
39
53
44.5
6
4th Class
37
54
45.7
6
5th Class
41
56
48.3
6
6th Class
43
54
49.3
6
Total
330
593
456.5
33
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).