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
26.19
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+
2007/08
59
4
14.75
18
0
2008/09
104
5
20.80
25
0
2009/10
146
7
20.86
29
0
2010/11
184
8
23.00
32
2
2011/12
232
8
29.00
34
4
2012/13
269
9
29.89
35
5
2013/14
317
12
26.42
35
4
2014/15
362
13
27.85
34
6
2015/16
393
14
28.07
35
4
2016/17
400
15
26.67
31
2
2017/18
438
16
27.38
31
4
2019/20
432
16
27.00
31
3
2020/21
430
16
26.88
31
2
2021/22
433
16
27.06
31
1
2022/23
427
16
26.69
30
1
2023/24
427
17
25.12
30
1
2024/25
420
16
26.25
28
0
2025/26
419
16
26.19
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2013/14: 270 in 2012/13 → 323, +53 pupils.
Biggest loss in a single year: 2024/25: 439 in 2023/24 → 432, -7 pupils.
Largest single-class increase: 2nd Class in 2021/22 (50 → 56, +6).
Largest single-class decrease: 3rd Class in 2021/22 (61 → 52, -9).
Largest cohort-step gain: SI → 1st in 2023/24 (50 → 56, +6).
Largest cohort-step loss: 1st → 2nd in 2021/22 (60 → 56, -4).
Overall: 59 (2007/08) → 431 (2025/26), 372.
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
47
54
50.7
6
Senior Infants
49
54
51.7
6
1st Class
52
60
54.8
6
2nd Class
50
57
54.2
6
3rd Class
52
61
55.2
6
4th Class
53
59
55.7
6
5th Class
55
60
56.7
6
6th Class
53
58
55.8
6
Total
59
444
339.1
19
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).