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
22.33
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
129
5
25.80
34
1
2007/08
123
5
24.60
27
0
2008/09
126
5
25.20
28
0
2009/10
133
5
26.60
31
1
2010/11
123
5
24.60
31
2
2011/12
143
5
28.60
33
2
2012/13
142
5
28.40
30
2
2013/14
141
5
28.20
33
2
2014/15
133
5
26.60
33
2
2015/16
131
5
26.20
30
1
2016/17
136
5
27.20
30
1
2017/18
128
5
25.60
29
0
2019/20
134
6
22.33
26
0
2020/21
138
8
17.25
22
0
2021/22
132
6
22.00
29
0
2022/23
136
6
22.67
27
0
2023/24
138
6
23.00
27
0
2024/25
129
6
21.50
30
1
2025/26
134
6
22.33
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2011/12: 125 in 2010/11 → 143, +18 pupils.
Biggest loss in a single year: 1993/94: 186 in 1983/84 → 142, -44 pupils.
Largest single-class increase: 3rd Class in 2025/26 (16 → 26, +10).
Largest single-class decrease: 1st Class in 2021/22 (17 → 10, -7).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (17 → 26, +9).
Largest cohort-step loss: SI → 1st in 2021/22 (14 → 10, -4).
Overall: 150 (1974/75) → 152 (2025/26), 2.
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
8
15
12.3
6
Senior Infants
10
18
14.7
6
1st Class
9
17
13.8
6
2nd Class
12
19
16.0
6
3rd Class
16
26
19.3
6
4th Class
15
22
19.2
6
5th Class
14
24
20.0
6
6th Class
16
27
22.2
6
Total
125
186
147.3
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).