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
23.17
2025/26
Mainstream classes
6
2025/26
Largest class group
32
2025/26
Classes with 30+ pupils
2
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
111
4
27.75
36
1
2007/08
113
4
28.25
31
3
2008/09
116
4
29.00
37
1
2009/10
130
5
26.00
32
3
2010/11
139
5
27.80
37
2
2011/12
140
5
28.00
34
3
2012/13
137
5
27.40
30
1
2013/14
141
5
28.20
32
3
2014/15
153
5
30.60
37
3
2015/16
161
6
26.83
34
3
2016/17
169
6
28.17
39
3
2017/18
172
6
28.67
34
4
2019/20
168
7
24.00
32
1
2020/21
156
7
22.29
32
2
2021/22
151
6
25.17
32
1
2022/23
148
6
24.67
30
1
2023/24
147
6
24.50
33
2
2024/25
147
6
24.50
30
2
2025/26
139
6
23.17
32
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 97 in 1982/83 → 112, +15 pupils.
Biggest loss in a single year: 2020/21: 168 in 2019/20 → 156, -12 pupils.
Largest single-class increase: Senior Infants in 2025/26 (18 → 27, +9).
Largest single-class decrease: 2nd Class in 2021/22 (26 → 18, -8).
Largest cohort-step gain: JI → SI in 2025/26 (21 → 27, +6).
Largest cohort-step loss: 3rd → 4th in 2025/26 (17 → 14, -3).
Overall: 85 (1975/76) → 145 (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
14
21
17.3
6
Senior Infants
14
27
17.2
6
1st Class
14
18
15.8
6
2nd Class
14
26
17.5
6
3rd Class
13
25
18.5
6
4th Class
13
26
18.5
6
5th Class
14
27
21.5
6
6th Class
19
27
22.7
6
Total
85
173
120.0
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).