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
23.71
2025/26
Mainstream classes
7
2025/26
Largest class group
27
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
120
5
24.00
30
1
2007/08
132
5
26.40
30
1
2008/09
144
5
28.80
31
2
2009/10
150
5
30.00
31
3
2010/11
159
6
26.50
30
2
2011/12
152
6
25.33
30
2
2012/13
161
6
26.83
31
3
2013/14
151
6
25.17
31
2
2014/15
145
6
24.17
28
0
2015/16
142
6
23.67
27
0
2016/17
136
5
27.20
32
1
2017/18
147
6
24.50
35
2
2019/20
132
5
26.40
32
2
2020/21
149
6
24.83
28
0
2021/22
149
6
24.83
29
0
2022/23
156
6
26.00
30
1
2023/24
170
7
24.29
30
1
2024/25
170
7
24.29
33
3
2025/26
166
7
23.71
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2020/21: 132 in 2019/20 → 149, +17 pupils.
Biggest loss in a single year: 2018/19: 147 in 2017/18 → 133, -14 pupils.
Largest single-class increase: 5th Class in 2023/24 (15 → 27, +12).
Largest single-class decrease: 2nd Class in 2024/25 (32 → 19, -13).
Largest cohort-step gain: SI → 1st in 2022/23 (28 → 31, +3).
Largest cohort-step loss: 3rd → 4th in 2024/25 (24 → 22, -2).
Overall: 117 (1975/76) → 166 (2025/26), 49.
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
28
20.7
6
Senior Infants
17
28
20.3
6
1st Class
13
31
20.5
6
2nd Class
13
32
20.7
6
3rd Class
14
31
21.0
6
4th Class
14
30
20.2
6
5th Class
15
27
19.0
6
6th Class
14
25
17.7
6
Total
100
170
127.7
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).