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
27.56
2025/26
Mainstream classes
16
2025/26
Largest class group
29
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
199
8
24.88
31
3
2007/08
237
9
26.33
30
2
2008/09
264
10
26.40
30
2
2009/10
299
11
27.18
31
3
2010/11
331
12
27.58
30
2
2011/12
359
13
27.62
32
5
2012/13
385
14
27.50
32
5
2013/14
427
15
28.47
33
7
2014/15
462
16
28.88
33
7
2015/16
474
16
29.62
33
9
2016/17
488
16
30.50
33
11
2017/18
490
16
30.62
33
13
2019/20
488
16
30.50
33
12
2020/21
484
16
30.25
32
12
2021/22
460
16
28.75
32
3
2022/23
452
16
28.25
32
3
2023/24
442
16
27.62
30
2
2024/25
444
16
27.75
30
1
2025/26
441
16
27.56
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2013/14: 385 in 2012/13 → 427, +42 pupils.
Biggest loss in a single year: 2021/22: 484 in 2020/21 → 460, -24 pupils.
Largest single-class increase: 4th Class in 2022/23 (55 → 63, +8).
Largest single-class decrease: 6th Class in 2023/24 (60 → 52, -8).
Largest cohort-step gain: SI → 1st in 2024/25 (51 → 52, +1).
Largest cohort-step loss: 1st → 2nd in 2021/22 (61 → 57, -4).
Overall: 21 (1999/00) → 441 (2025/26), 420.
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
51
59
55.3
6
Senior Infants
51
61
55.2
6
1st Class
52
61
55.8
6
2nd Class
52
64
56.7
6
3rd Class
52
64
57.3
6
4th Class
54
63
58.0
6
5th Class
53
60
57.7
6
6th Class
52
62
57.8
6
Total
21
490
324.8
27
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).