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
23.87
2025/26
Mainstream classes
15
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
2025/26
Class group metrics trend
Class group metrics by year
Year
Mainstream class pupils
Mainstream classes
Average class size
Largest class
Classes 30+
2006/07
316
12
26.33
33
4
2007/08
291
12
24.25
31
2
2008/09
321
12
26.75
37
3
2009/10
355
13
27.31
33
6
2010/11
376
13
28.92
34
9
2011/12
390
14
27.86
32
7
2012/13
418
14
29.86
34
9
2013/14
429
14
30.64
34
10
2014/15
455
15
30.33
33
10
2015/16
481
16
30.06
33
11
2016/17
455
16
28.44
32
5
2017/18
438
16
27.38
31
5
2019/20
436
16
27.25
31
4
2020/21
421
17
24.76
31
2
2021/22
395
16
24.69
30
1
2022/23
379
16
23.69
27
0
2023/24
360
16
22.50
27
0
2024/25
368
15
24.53
30
1
2025/26
358
15
23.87
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 154 in 1982/83 → 312, +158 pupils.
Biggest loss in a single year: 1975/76: 254 in 1974/75 → 204, -50 pupils.
Largest single-class increase: 5th Class in 2024/25 (37 → 46, +9).
Largest single-class decrease: 4th Class in 2021/22 (57 → 46, -11).
Largest cohort-step gain: JI → SI in 2024/25 (49 → 51, +2).
Largest cohort-step loss: 5th → 6th in 2025/26 (46 → 40, -6).
Overall: 254 (1974/75) → 358 (2025/26), 104.
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
46
53
48.5
6
Senior Infants
44
55
49.0
6
1st Class
44
52
47.8
6
2nd Class
43
54
47.3
6
3rd Class
42
52
46.0
6
4th Class
43
57
47.7
6
5th Class
37
57
47.5
6
6th Class
35
56
46.3
6
Total
154
481
323.4
42
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).