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
22.75
2025/26
Mainstream classes
16
2025/26
Largest class group
25
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+
2013/14
13
1
13.00
13
0
2014/15
61
3
20.33
23
0
2015/16
69
3
23.00
34
1
2016/17
97
4
24.25
32
1
2017/18
129
7
18.43
24
0
2019/20
211
9
23.44
33
1
2020/21
272
11
24.73
35
1
2021/22
300
12
25.00
35
2
2022/23
331
14
23.64
32
2
2023/24
374
16
23.38
29
0
2024/25
371
16
23.19
27
0
2025/26
364
16
22.75
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2020/21: 223 in 2019/20 → 284, +61 pupils.
Biggest loss in a single year: 2025/26: 383 in 2024/25 → 375, -8 pupils.
Largest single-class increase: 4th Class in 2023/24 (32 → 55, +23).
Largest single-class decrease: Junior Infants in 2021/22 (52 → 42, -10).
Largest cohort-step gain: 3rd → 4th in 2023/24 (47 → 55, +8).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (56 → 49, -7).
Overall: 13 (2013/14) → 375 (2025/26), 362.
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
41
52
44.2
6
Senior Infants
44
50
47.0
6
1st Class
42
50
46.7
6
2nd Class
28
56
44.8
6
3rd Class
24
52
41.5
6
4th Class
25
55
39.2
6
5th Class
28
53
39.0
6
6th Class
18
51
35.2
6
Total
13
386
219.8
13
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).