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
19.00
2025/26
Mainstream classes
24
2025/26
Largest class group
23
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
214
12
17.83
22
0
2007/08
221
14
15.79
21
0
2008/09
227
14
16.21
21
0
2009/10
213
13
16.38
25
0
2010/11
208
11
18.91
24
0
2011/12
245
11
22.27
34
1
2012/13
246
11
22.36
35
2
2013/14
252
12
21.00
30
1
2014/15
243
12
20.25
25
0
2015/16
260
13
20.00
24
0
2016/17
276
13
21.23
37
1
2017/18
315
15
21.00
26
0
2019/20
390
19
20.53
25
0
2020/21
402
20
20.10
26
0
2021/22
411
20
20.55
26
0
2022/23
453
23
19.70
27
0
2023/24
484
24
20.17
24
0
2024/25
450
24
18.75
24
0
2025/26
456
24
19.00
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2019/20: 359 in 2018/19 → 402, +43 pupils.
Biggest loss in a single year: 1993/94: 522 in 1983/84 → 373, -149 pupils.
Largest single-class increase: 6th Class in 2025/26 (46 → 67, +21).
Largest single-class decrease: Senior Infants in 2024/25 (68 → 46, -22).
Largest cohort-step gain: 1st → 2nd in 2023/24 (50 → 63, +13).
Largest cohort-step loss: JI → SI in 2024/25 (58 → 46, -12).
Overall: 736 (1974/75) → 468 (2025/26), -268.
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
44
64
53.2
6
Senior Infants
46
68
55.7
6
1st Class
50
63
57.0
6
2nd Class
50
66
59.7
6
3rd Class
48
64
57.7
6
4th Class
51
70
57.0
6
5th Class
37
68
54.0
6
6th Class
38
67
51.7
6
Total
228
749
399.0
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).