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
22.58
2025/26
Mainstream classes
24
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+
2008/09
19
2
9.50
10
0
2009/10
52
3
17.33
25
0
2010/11
90
4
22.50
32
1
2011/12
132
5
26.40
37
1
2012/13
207
8
25.88
32
2
2013/14
272
10
27.20
31
4
2014/15
318
12
26.50
31
3
2015/16
363
14
25.93
30
1
2016/17
403
16
25.19
29
0
2017/18
437
17
25.71
30
1
2019/20
512
21
24.38
28
0
2020/21
549
22
24.95
28
0
2021/22
564
23
24.52
28
0
2022/23
567
23
24.65
27
0
2023/24
554
23
24.09
27
0
2024/25
540
24
22.50
28
0
2025/26
542
24
22.58
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2012/13: 132 in 2011/12 → 213, +81 pupils.
Biggest loss in a single year: 2024/25: 583 in 2023/24 → 570, -13 pupils.
Largest single-class increase: 5th Class in 2024/25 (54 → 80, +26).
Largest single-class decrease: 4th Class in 2022/23 (81 → 54, -27).
Largest cohort-step gain: SI → 1st in 2025/26 (61 → 72, +11).
Largest cohort-step loss: JI → SI in 2022/23 (70 → 58, -12).
Overall: 19 (2008/09) → 572 (2025/26), 553.
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
56
77
67.0
6
Senior Infants
56
79
67.8
6
1st Class
63
79
74.3
6
2nd Class
53
79
70.3
6
3rd Class
54
81
71.0
6
4th Class
54
87
74.0
6
5th Class
54
80
69.5
6
6th Class
56
80
66.2
6
Total
19
595
384.7
18
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).