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
17.69
2025/26
Mainstream classes
16
2025/26
Largest class group
21
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
317
15
21.13
30
1
2007/08
359
15
23.93
36
3
2008/09
389
17
22.88
37
3
2009/10
417
19
21.95
38
2
2010/11
414
19
21.79
27
0
2011/12
443
22
20.14
24
0
2012/13
455
21
21.67
29
0
2013/14
438
21
20.86
25
0
2014/15
435
20
21.75
27
0
2015/16
434
20
21.70
27
0
2016/17
411
20
20.55
28
0
2017/18
381
19
20.05
27
0
2019/20
377
18
20.94
28
0
2020/21
356
24
14.83
18
0
2021/22
321
17
18.88
25
0
2022/23
328
17
19.29
22
0
2023/24
332
17
19.53
23
0
2024/25
299
16
18.69
21
0
2025/26
283
16
17.69
21
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 351 in 2006/07 → 391, +40 pupils.
Biggest loss in a single year: 2017/18: 411 in 2016/17 → 381, -30 pupils.
Largest single-class increase: Junior Infants in 2022/23 (30 → 43, +13).
Largest single-class decrease: Junior Infants in 2021/22 (45 → 30, -15).
Largest cohort-step gain: 3rd → 4th in 2023/24 (38 → 45, +7).
Largest cohort-step loss: JI → SI in 2024/25 (42 → 36, -6).
Overall: 334 (2003/04) → 301 (2025/26), -33.
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
30
45
37.8
6
Senior Infants
35
41
37.2
6
1st Class
34
42
37.5
6
2nd Class
34
41
37.3
6
3rd Class
34
40
37.3
6
4th Class
37
49
41.5
6
5th Class
39
54
44.5
6
6th Class
40
64
49.8
6
Total
301
455
380.7
23
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).