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
23.81
2025/26
Mainstream classes
16
2025/26
Largest class group
28
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
104
5
20.80
25
0
2007/08
119
5
23.80
32
2
2008/09
164
7
23.43
32
2
2009/10
236
9
26.22
32
4
2010/11
265
10
26.50
31
2
2011/12
277
10
27.70
35
3
2012/13
309
11
28.09
37
3
2013/14
347
13
26.69
33
3
2014/15
375
14
26.79
33
3
2015/16
401
15
26.73
33
3
2016/17
394
15
26.27
31
2
2017/18
385
15
25.67
32
1
2019/20
419
16
26.19
32
5
2020/21
411
16
25.69
31
4
2021/22
394
16
24.62
30
1
2022/23
406
16
25.38
30
1
2023/24
405
16
25.31
30
1
2024/25
398
16
24.88
29
0
2025/26
381
16
23.81
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2009/10: 164 in 2008/09 → 236, +72 pupils.
Biggest loss in a single year: 2021/22: 411 in 2020/21 → 394, -17 pupils.
Largest single-class increase: 3rd Class in 2021/22 (42 → 55, +13).
Largest single-class decrease: 4th Class in 2025/26 (56 → 41, -15).
Largest cohort-step gain: JI → SI in 2022/23 (44 → 48, +4).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (50 → 44, -6).
Overall: 25 (2002/03) → 385 (2025/26), 360.
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
44
53
48.3
6
Senior Infants
45
61
50.2
6
1st Class
45
60
51.7
6
2nd Class
48
59
53.7
6
3rd Class
42
57
49.5
6
4th Class
41
56
49.5
6
5th Class
43
55
49.3
6
6th Class
41
55
48.3
6
Total
25
419
285.4
24
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).