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
24.62
2025/26
Mainstream classes
16
2025/26
Largest class group
27
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+
2015/16
20
2
10.00
10
0
2016/17
77
3
25.67
27
0
2017/18
130
5
26.00
27
0
2019/20
213
8
26.62
27
0
2020/21
261
10
26.10
27
0
2021/22
311
12
25.92
27
0
2022/23
372
14
26.57
27
0
2023/24
400
15
26.67
27
0
2024/25
399
16
24.94
27
0
2025/26
394
16
24.62
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2022/23: 315 in 2021/22 → 377, +62 pupils.
Biggest loss in a single year: 2024/25: 412 in 2023/24 → 411, -1 pupils.
Largest single-class increase: 4th Class in 2021/22 (25 → 54, +29).
Largest single-class decrease: 1st Class in 2021/22 (54 → 26, -28).
Largest cohort-step gain: JI → SI in 2022/23 (51 → 54, +3).
Largest cohort-step loss: JI → SI in 2024/25 (58 → 54, -4).
Overall: 20 (2015/16) → 412 (2025/26), 392.
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
58
53.8
6
Senior Infants
26
56
49.3
6
1st Class
26
56
49.5
6
2nd Class
27
54
48.5
6
3rd Class
27
56
49.5
6
4th Class
25
54
44.2
6
5th Class
27
55
43.2
5
6th Class
27
54
47.0
4
Total
20
412
256.4
11
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).