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
24.67
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
136
5
27.20
29
0
2007/08
144
5
28.80
35
2
2008/09
149
6
24.83
29
0
2009/10
158
6
26.33
31
1
2010/11
161
6
26.83
31
2
2011/12
165
6
27.50
31
2
2012/13
162
6
27.00
31
3
2013/14
154
6
25.67
32
1
2014/15
169
6
28.17
36
2
2015/16
173
6
28.83
33
3
2016/17
178
7
25.43
33
2
2017/18
173
7
24.71
33
2
2019/20
165
6
27.50
33
3
2020/21
156
6
26.00
32
2
2021/22
164
7
23.43
33
2
2022/23
156
6
26.00
30
1
2023/24
151
6
25.17
31
1
2024/25
149
6
24.83
30
2
2025/26
148
6
24.67
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 122 in 1983/84 → 152, +30 pupils.
Biggest loss in a single year: 1976/77: 89 in 1975/76 → 78, -11 pupils.
Largest single-class increase: 6th Class in 2021/22 (13 → 33, +20).
Largest single-class decrease: Senior Infants in 2021/22 (21 → 11, -10).
Largest cohort-step gain: 4th → 5th in 2021/22 (22 → 24, +2).
Largest cohort-step loss: JI → SI in 2025/26 (18 → 16, -2).
Overall: 96 (1974/75) → 148 (2025/26), 52.
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
11
24
17.0
6
Senior Infants
11
25
18.2
6
1st Class
11
25
19.3
6
2nd Class
11
26
19.2
6
3rd Class
11
21
17.7
6
4th Class
12
22
18.7
6
5th Class
17
33
22.7
6
6th Class
13
33
21.3
6
Total
78
178
136.7
42
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).