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
22.83
2025/26
Mainstream classes
6
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
154
6
25.67
29
0
2007/08
159
6
26.50
29
0
2008/09
152
6
25.33
30
1
2009/10
149
6
24.83
27
0
2010/11
149
6
24.83
26
0
2011/12
155
6
25.83
28
0
2012/13
146
6
24.33
29
0
2013/14
145
6
24.17
30
1
2014/15
132
6
22.00
28
0
2015/16
132
5
26.40
28
0
2016/17
125
5
25.00
27
0
2017/18
140
5
28.00
33
1
2019/20
144
6
24.00
29
0
2020/21
151
6
25.17
34
2
2021/22
151
6
25.17
28
0
2022/23
156
6
26.00
34
1
2023/24
143
6
23.83
31
2
2024/25
149
6
24.83
32
2
2025/26
137
6
22.83
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1976/77: 89 in 1975/76 → 119, +30 pupils.
Biggest loss in a single year: 2014/15: 145 in 2013/14 → 132, -13 pupils.
Largest single-class increase: 6th Class in 2024/25 (12 → 28, +16).
Largest single-class decrease: Junior Infants in 2023/24 (18 → 9, -9).
Largest cohort-step gain: SI → 1st in 2025/26 (10 → 13, +3).
Largest cohort-step loss: SI → 1st in 2024/25 (18 → 17, -1).
Overall: 89 (1975/76) → 143 (2025/26), 54.
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
9
19
16.0
6
Senior Infants
10
20
16.5
6
1st Class
13
21
17.8
6
2nd Class
16
27
20.2
6
3rd Class
13
27
19.5
6
4th Class
13
28
20.8
6
5th Class
13
28
19.7
6
6th Class
12
28
18.5
6
Total
89
178
146.8
41
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).