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
23.44
2025/26
Mainstream classes
18
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+
2014/15
491
20
24.55
30
1
2015/16
522
22
23.73
27
0
2016/17
479
20
23.95
28
0
2017/18
491
20
24.55
29
0
2019/20
389
18
21.61
30
2
2020/21
364
16
22.75
26
0
2021/22
356
15
23.73
30
1
2022/23
385
15
25.67
30
2
2023/24
392
16
24.50
28
0
2024/25
437
17
25.71
29
0
2025/26
422
18
23.44
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2024/25: 403 in 2023/24 → 449, +46 pupils.
Biggest loss in a single year: 2019/20: 474 in 2018/19 → 401, -73 pupils.
Largest single-class increase: 1st Class in 2022/23 (84 → 115, +31).
Largest single-class decrease: 1st Class in 2021/22 (103 → 84, -19).
Largest cohort-step gain: JI → SI in 2024/25 (113 → 123, +10).
Largest cohort-step loss: 1st → 2nd in 2025/26 (132 → 62, -70).
Overall: 491 (2014/15) → 434 (2025/26), -57.
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
111
125
116.5
6
Senior Infants
86
124
114.0
6
1st Class
84
132
112.2
6
2nd Class
38
62
52.0
6
3rd Class
0
0
0.0
1
4th Class
0
0
0.0
1
5th Class
0
0
0.0
1
6th Class
0
0
0.0
1
Total
368
528
442.9
12
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).