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
24.43
2025/26
Mainstream classes
7
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
150
7
21.43
28
0
2007/08
161
8
20.12
27
0
2008/09
170
8
21.25
29
0
2009/10
180
8
22.50
29
0
2010/11
188
8
23.50
34
1
2011/12
188
8
23.50
33
1
2012/13
187
8
23.38
33
1
2013/14
208
8
26.00
33
2
2014/15
207
8
25.88
33
2
2015/16
217
8
27.12
32
4
2016/17
219
8
27.38
31
5
2017/18
221
8
27.62
32
5
2019/20
208
8
26.00
32
3
2020/21
198
8
24.75
32
2
2021/22
192
8
24.00
33
1
2022/23
197
8
24.62
32
1
2023/24
182
8
22.75
29
0
2024/25
174
8
21.75
30
1
2025/26
171
7
24.43
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2013/14: 187 in 2012/13 → 208, +21 pupils.
Biggest loss in a single year: 2023/24: 197 in 2022/23 → 182, -15 pupils.
Largest single-class increase: 5th Class in 2021/22 (24 → 33, +9).
Largest single-class decrease: 1st Class in 2025/26 (30 → 18, -12).
Largest cohort-step gain: 3rd → 4th in 2025/26 (21 → 22, +1).
Largest cohort-step loss: 1st → 2nd in 2025/26 (30 → 27, -3).
Overall: 152 (2000/01) → 171 (2025/26), 19.
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
18
28
22.5
6
Senior Infants
18
29
22.5
6
1st Class
18
30
22.2
6
2nd Class
19
27
21.8
6
3rd Class
19
29
22.5
6
4th Class
18
32
23.8
6
5th Class
18
33
24.3
6
6th Class
18
32
26.0
6
Total
142
221
181.1
26
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).