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
17.60
2025/26
Mainstream classes
20
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
120
6
20.00
26
0
2007/08
179
7
25.57
36
2
2008/09
210
8
26.25
33
3
2009/10
291
11
26.45
34
2
2010/11
338
13
26.00
32
4
2011/12
360
14
25.71
32
3
2012/13
414
16
25.88
30
2
2013/14
401
16
25.06
30
1
2014/15
405
16
25.31
30
3
2015/16
400
16
25.00
29
0
2016/17
379
16
23.69
30
1
2017/18
385
16
24.06
31
2
2019/20
376
16
23.50
27
0
2020/21
372
16
23.25
28
0
2021/22
364
16
22.75
27
0
2022/23
361
20
18.05
23
0
2023/24
351
20
17.55
22
0
2024/25
350
20
17.50
22
0
2025/26
352
20
17.60
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2009/10: 210 in 2008/09 → 297, +87 pupils.
Biggest loss in a single year: 2016/17: 430 in 2015/16 → 409, -21 pupils.
Largest single-class increase: 5th Class in 2023/24 (39 → 59, +20).
Largest single-class decrease: Junior Infants in 2023/24 (44 → 21, -23).
Largest cohort-step gain: 4th → 5th in 2025/26 (56 → 67, +11).
Largest cohort-step loss: 3rd → 4th in 2021/22 (42 → 39, -3).
Overall: 24 (2004/05) → 381 (2025/26), 357.
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
21
45
37.5
6
Senior Infants
24
47
39.3
6
1st Class
34
48
41.8
6
2nd Class
43
49
45.8
6
3rd Class
42
54
47.7
6
4th Class
39
56
47.8
6
5th Class
39
67
52.3
6
6th Class
42
58
50.8
6
Total
24
430
331.0
22
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).