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
19.00
2025/26
Mainstream classes
19
2025/26
Largest class group
24
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
456
21
21.71
28
0
2016/17
438
21
20.86
28
0
2017/18
421
20
21.05
29
0
2019/20
420
19
22.11
30
1
2020/21
407
19
21.42
27
0
2021/22
392
19
20.63
26
0
2022/23
381
19
20.05
27
0
2023/24
371
18
20.61
28
0
2024/25
379
19
19.95
28
0
2025/26
361
19
19.00
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2024/25: 379 in 2023/24 → 391, +12 pupils.
Biggest loss in a single year: 2016/17: 456 in 2015/16 → 438, -18 pupils.
Largest single-class increase: 1st Class in 2025/26 (36 → 50, +14).
Largest single-class decrease: 3rd Class in 2021/22 (60 → 49, -11).
Largest cohort-step gain: 5th → 6th in 2022/23 (52 → 60, +8).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (52 → 49, -3).
Overall: 456 (2015/16) → 373 (2025/26), -83.
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
33
46
39.3
6
Senior Infants
34
48
42.3
6
1st Class
36
51
44.0
6
2nd Class
39
52
44.5
6
3rd Class
41
60
49.3
6
4th Class
46
60
52.7
6
5th Class
50
61
56.3
6
6th Class
46
60
55.3
6
Total
373
456
407.8
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).