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
21.69
2025/26
Mainstream classes
13
2025/26
Largest class group
33
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
366
13
28.15
35
5
2007/08
399
15
26.60
35
2
2008/09
394
15
26.27
34
2
2009/10
419
15
27.93
32
6
2010/11
444
16
27.75
33
6
2011/12
447
16
27.94
32
7
2012/13
447
16
27.94
31
4
2013/14
446
16
27.88
31
3
2014/15
441
16
27.56
31
3
2015/16
434
16
27.12
29
0
2016/17
422
16
26.38
29
0
2017/18
400
16
25.00
27
0
2019/20
377
15
25.13
32
2
2020/21
366
15
24.40
32
1
2021/22
344
15
22.93
33
1
2022/23
331
14
23.64
35
2
2023/24
312
14
22.29
35
1
2024/25
298
14
21.29
27
0
2025/26
282
13
21.69
33
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1996/97: 34 in 1995/96 → 88, +54 pupils.
Biggest loss in a single year: 2019/20: 400 in 2018/19 → 377, -23 pupils.
Largest single-class increase: Senior Infants in 2025/26 (25 → 38, +13).
Largest single-class decrease: 1st Class in 2025/26 (45 → 22, -23).
Largest cohort-step gain: SI → 1st in 2024/25 (41 → 45, +4).
Largest cohort-step loss: JI → SI in 2021/22 (46 → 42, -4).
Overall: 34 (1995/96) → 288 (2025/26), 254.
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
25
46
36.0
6
Senior Infants
25
42
35.3
6
1st Class
22
47
37.7
6
2nd Class
34
47
41.3
6
3rd Class
33
47
40.7
6
4th Class
34
49
43.0
6
5th Class
33
53
44.2
6
6th Class
40
52
46.0
6
Total
34
447
322.5
31
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).