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
24.50
2025/26
Mainstream classes
6
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
148
5
29.60
37
3
2007/08
161
6
26.83
29
0
2008/09
151
6
25.17
32
1
2009/10
152
6
25.33
28
0
2010/11
157
6
26.17
28
0
2011/12
161
6
26.83
29
0
2012/13
151
6
25.17
28
0
2013/14
145
6
24.17
29
0
2014/15
119
6
19.83
22
0
2015/16
111
5
22.20
25
0
2016/17
114
4
28.50
35
1
2017/18
117
5
23.40
27
0
2019/20
113
5
22.60
25
0
2020/21
122
5
24.40
34
1
2021/22
131
5
26.20
34
2
2022/23
144
5
28.80
34
2
2023/24
149
6
24.83
27
0
2024/25
142
6
23.67
26
0
2025/26
147
6
24.50
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1978/79: 190 in 1977/78 → 203, +13 pupils.
Biggest loss in a single year: 2014/15: 145 in 2013/14 → 119, -26 pupils.
Largest single-class increase: 4th Class in 2023/24 (13 → 22, +9).
Largest single-class decrease: 5th Class in 2023/24 (21 → 13, -8).
Largest cohort-step gain: 2nd → 3rd in 2022/23 (18 → 21, +3).
Largest cohort-step loss: 1st → 2nd in 2023/24 (20 → 17, -3).
Overall: 207 (1974/75) → 147 (2025/26), -60.
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
16
22
18.7
6
Senior Infants
16
23
18.7
6
1st Class
16
23
18.7
6
2nd Class
14
22
17.5
6
3rd Class
14
22
18.7
6
4th Class
13
22
17.5
6
5th Class
6
21
15.2
6
6th Class
7
20
14.3
6
Total
111
217
161.9
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).