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
15.86
2025/26
Mainstream classes
14
2025/26
Largest class group
23
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
381
21
18.14
25
0
2007/08
383
21
18.24
27
0
2008/09
369
21
17.57
26
0
2009/10
376
20
18.80
27
0
2010/11
352
20
17.60
23
0
2011/12
379
20
18.95
27
0
2012/13
372
20
18.60
27
0
2013/14
373
19
19.63
27
0
2014/15
355
19
18.68
26
0
2015/16
357
19
18.79
27
0
2016/17
347
19
18.26
27
0
2017/18
335
18
18.61
26
0
2019/20
309
17
18.18
24
0
2020/21
292
17
17.18
25
0
2021/22
271
16
16.94
20
0
2022/23
266
16
16.62
22
0
2023/24
241
16
15.06
20
0
2024/25
227
14
16.21
22
0
2025/26
222
14
15.86
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2001/02: 416 in 2000/01 → 422, +6 pupils.
Biggest loss in a single year: 1997/98: 524 in 1996/97 → 468, -56 pupils.
Largest single-class increase: 3rd Class in 2025/26 (22 → 35, +13).
Largest single-class decrease: Senior Infants in 2021/22 (42 → 20, -22).
Largest cohort-step gain: 4th → 5th in 2025/26 (39 → 45, +6).
Largest cohort-step loss: JI → SI in 2023/24 (27 → 24, -3).
Overall: 524 (1996/97) → 232 (2025/26), -292.
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
16
29
23.0
6
Senior Infants
20
42
26.5
6
1st Class
20
41
29.7
6
2nd Class
20
41
32.0
6
3rd Class
22
41
33.5
6
4th Class
22
39
34.2
6
5th Class
34
45
38.3
6
6th Class
32
49
38.5
6
Total
232
524
368.0
30
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).