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
23.38
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
45
2
22.50
24
0
2016/17
92
4
23.00
24
0
2017/18
153
6
25.50
30
2
2019/20
260
10
26.00
28
0
2020/21
309
12
25.75
27
0
2021/22
352
14
25.14
28
0
2022/23
393
16
24.56
29
0
2023/24
379
16
23.69
27
0
2024/25
376
16
23.50
28
0
2025/26
374
16
23.38
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2017/18: 92 in 2016/17 → 153, +61 pupils.
Biggest loss in a single year: 2023/24: 399 in 2022/23 → 391, -8 pupils.
Largest single-class increase: Senior Infants in 2021/22 (47 → 55, +8).
Largest single-class decrease: 6th Class in 2025/26 (47 → 35, -12).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (49 → 55, +6).
Largest cohort-step loss: SI → 1st in 2023/24 (57 → 49, -8).
Overall: 45 (2015/16) → 386 (2025/26), 341.
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
48
56
52.3
6
Senior Infants
47
57
52.3
6
1st Class
49
55
52.0
6
2nd Class
46
56
50.5
6
3rd Class
44
55
49.2
6
4th Class
37
52
45.3
6
5th Class
36
50
43.2
5
6th Class
35
47
42.2
4
Total
45
399
271.6
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).