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
24.29
2025/26
Mainstream classes
24
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+
2010/11
21
2
10.50
11
0
2011/12
77
4
19.25
25
0
2012/13
203
8
25.38
29
0
2013/14
314
12
26.17
29
0
2014/15
414
16
25.88
30
1
2015/16
481
18
26.72
32
1
2016/17
548
21
26.10
31
1
2017/18
598
23
26.00
32
5
2019/20
659
24
27.46
33
3
2020/21
657
24
27.38
33
4
2021/22
662
24
27.58
32
3
2022/23
653
24
27.21
30
2
2023/24
638
24
26.58
31
4
2024/25
620
24
25.83
31
3
2025/26
583
24
24.29
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2012/13: 77 in 2011/12 → 215, +138 pupils.
Biggest loss in a single year: 2025/26: 644 in 2024/25 → 613, -31 pupils.
Largest single-class increase: 6th Class in 2021/22 (71 → 94, +23).
Largest single-class decrease: 5th Class in 2025/26 (88 → 65, -23).
Largest cohort-step gain: 5th → 6th in 2022/23 (82 → 88, +6).
Largest cohort-step loss: SI → 1st in 2023/24 (86 → 79, -7).
Overall: 21 (2010/11) → 613 (2025/26), 592.
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
70
88
79.7
6
Senior Infants
76
87
81.0
6
1st Class
74
85
79.8
6
2nd Class
75
85
80.7
6
3rd Class
75
86
81.0
6
4th Class
70
88
81.7
6
5th Class
65
97
85.3
6
6th Class
71
94
86.0
6
Total
21
686
502.1
16
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).