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
24.69
2025/26
Mainstream classes
16
2025/26
Largest class group
29
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+
2006/07
212
8
26.50
30
2
2007/08
208
8
26.00
31
2
2008/09
222
8
27.75
31
2
2009/10
215
8
26.88
30
1
2010/11
222
8
27.75
31
3
2011/12
218
8
27.25
31
2
2012/13
233
8
29.12
34
5
2013/14
264
10
26.40
31
3
2014/15
284
11
25.82
37
4
2015/16
308
11
28.00
34
7
2016/17
336
12
28.00
35
5
2017/18
334
13
25.69
32
3
2019/20
376
15
25.07
30
1
2020/21
395
15
26.33
33
2
2021/22
388
16
24.25
29
0
2022/23
397
16
24.81
29
0
2023/24
404
16
25.25
30
1
2024/25
402
16
25.12
30
1
2025/26
395
16
24.69
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2013/14: 233 in 2012/13 → 264, +31 pupils.
Biggest loss in a single year: 2005/06: 193 in 2004/05 → 182, -11 pupils.
Largest single-class increase: 3rd Class in 2023/24 (49 → 59, +10).
Largest single-class decrease: Junior Infants in 2025/26 (50 → 36, -14).
Largest cohort-step gain: 1st → 2nd in 2023/24 (50 → 53, +3).
Largest cohort-step loss: 4th → 5th in 2021/22 (51 → 48, -3).
Overall: 94 (1974/75) → 401 (2025/26), 307.
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
36
51
45.3
6
Senior Infants
43
53
49.0
6
1st Class
44
56
50.8
6
2nd Class
42
56
51.2
6
3rd Class
41
59
51.0
6
4th Class
42
59
52.0
6
5th Class
45
58
50.0
6
6th Class
44
55
49.2
6
Total
94
410
231.6
43
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).