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
24.27
2025/26
Mainstream classes
15
2025/26
Largest class group
34
2025/26
Classes with 30+ pupils
3
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
220
8
27.50
33
2
2007/08
239
8
29.88
40
4
2008/09
242
9
26.89
32
3
2009/10
247
9
27.44
35
4
2010/11
259
9
28.78
34
4
2011/12
267
10
26.70
33
4
2012/13
269
10
26.90
35
3
2013/14
268
10
26.80
35
2
2014/15
276
10
27.60
36
3
2015/16
273
10
27.30
34
2
2016/17
286
11
26.00
36
4
2017/18
288
12
24.00
35
1
2019/20
321
12
26.75
34
3
2020/21
343
13
26.38
33
4
2021/22
348
14
24.86
37
1
2022/23
350
15
23.33
28
0
2023/24
355
14
25.36
32
3
2024/25
364
15
24.27
34
2
2025/26
364
15
24.27
34
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 234 in 1983/84 → 284, +50 pupils.
Biggest loss in a single year: 1998/99: 264 in 1997/98 → 244, -20 pupils.
Largest single-class increase: 4th Class in 2025/26 (48 → 66, +18).
Largest single-class decrease: 3rd Class in 2025/26 (65 → 42, -23).
Largest cohort-step gain: JI → SI in 2021/22 (55 → 58, +3).
Largest cohort-step loss: 1st → 2nd in 2022/23 (51 → 47, -4).
Overall: 108 (1974/75) → 364 (2025/26), 256.
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
40
55
45.2
6
Senior Infants
38
58
46.7
6
1st Class
34
61
45.7
6
2nd Class
37
63
45.5
6
3rd Class
37
65
44.8
6
4th Class
37
66
44.8
6
5th Class
38
47
41.5
6
6th Class
37
42
39.8
6
Total
104
364
250.9
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).