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
23.79
2025/26
Mainstream classes
14
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
248
9
27.56
33
4
2007/08
261
9
29.00
33
4
2008/09
258
10
25.80
33
3
2009/10
286
10
28.60
33
4
2010/11
287
11
26.09
32
2
2011/12
304
11
27.64
31
3
2012/13
313
12
26.08
31
4
2013/14
315
12
26.25
30
1
2014/15
340
13
26.15
30
3
2015/16
350
13
26.92
30
2
2016/17
373
14
26.64
30
4
2017/18
367
14
26.21
31
3
2019/20
369
15
24.60
28
0
2020/21
377
16
23.56
27
0
2021/22
367
15
24.47
29
0
2022/23
357
15
23.80
28
0
2023/24
343
15
22.87
28
0
2024/25
334
14
23.86
30
2
2025/26
333
14
23.79
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2009/10: 260 in 2008/09 → 288, +28 pupils.
Biggest loss in a single year: 2023/24: 357 in 2022/23 → 343, -14 pupils.
Largest single-class increase: 4th Class in 2025/26 (36 → 48, +12).
Largest single-class decrease: 1st Class in 2021/22 (50 → 37, -13).
Largest cohort-step gain: JI → SI in 2021/22 (44 → 47, +3).
Largest cohort-step loss: 5th → 6th in 2024/25 (42 → 39, -3).
Overall: 105 (1974/75) → 338 (2025/26), 233.
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
39.8
6
Senior Infants
37
47
41.5
6
1st Class
37
50
43.0
6
2nd Class
38
49
44.3
6
3rd Class
37
51
44.7
6
4th Class
36
52
46.0
6
5th Class
36
54
46.7
6
6th Class
39
52
46.7
6
Total
105
378
238.6
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).