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
23.00
2025/26
Mainstream classes
14
2025/26
Largest class group
34
2025/26
Classes with 30+ pupils
2
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
267
10
26.70
36
4
2007/08
287
10
28.70
37
5
2008/09
320
12
26.67
39
5
2009/10
332
12
27.67
38
3
2010/11
343
12
28.58
38
3
2011/12
352
13
27.08
33
2
2012/13
379
14
27.07
32
2
2013/14
392
15
26.13
32
1
2014/15
408
15
27.20
38
3
2015/16
411
16
25.69
31
1
2016/17
392
16
24.50
30
1
2017/18
385
15
25.67
32
2
2019/20
358
15
23.87
37
1
2020/21
340
15
22.67
35
1
2021/22
354
14
25.29
38
2
2022/23
340
14
24.29
38
2
2023/24
328
14
23.43
31
3
2024/25
318
14
22.71
37
2
2025/26
322
14
23.00
34
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 287 in 2007/08 → 320, +33 pupils.
Biggest loss in a single year: 2018/19: 385 in 2017/18 → 360, -25 pupils.
Largest single-class increase: 1st Class in 2021/22 (36 → 55, +19).
Largest single-class decrease: 2nd Class in 2023/24 (57 → 39, -18).
Largest cohort-step gain: JI → SI in 2021/22 (35 → 38, +3).
Largest cohort-step loss: SI → 1st in 2023/24 (47 → 44, -3).
Overall: 223 (1993/94) → 328 (2025/26), 105.
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
34
47
39.2
6
Senior Infants
34
52
41.3
6
1st Class
34
55
42.0
6
2nd Class
37
57
42.5
6
3rd Class
37
56
43.0
6
4th Class
35
54
42.7
6
5th Class
34
53
43.2
6
6th Class
34
49
40.8
6
Total
223
411
315.1
33
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).