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
20.86
2025/26
Mainstream classes
7
2025/26
Largest class group
24
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
100
4
25.00
28
0
2007/08
114
4
28.50
34
1
2008/09
112
5
22.40
27
0
2009/10
116
5
23.20
32
1
2010/11
114
5
22.80
31
1
2011/12
104
5
20.80
29
0
2012/13
117
5
23.40
27
0
2013/14
124
5
24.80
28
0
2014/15
133
5
26.60
34
1
2015/16
143
6
23.83
29
0
2016/17
162
7
23.14
32
1
2017/18
158
7
22.57
34
1
2019/20
169
7
24.14
29
0
2020/21
164
7
23.43
30
1
2021/22
159
7
22.71
29
0
2022/23
154
7
22.00
26
0
2023/24
149
7
21.29
27
0
2024/25
146
7
20.86
24
0
2025/26
146
7
20.86
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 160 in 2015/16 → 180, +20 pupils.
Biggest loss in a single year: 1993/94: 135 in 1982/83 → 104, -31 pupils.
Largest single-class increase: Junior Infants in 2025/26 (15 → 24, +9).
Largest single-class decrease: Junior Infants in 2022/23 (20 → 12, -8).
Largest cohort-step gain: SI → 1st in 2025/26 (15 → 23, +8).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (21 → 19, -2).
Overall: 106 (1975/76) → 176 (2025/26), 70.
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
12
24
17.2
6
Senior Infants
14
22
17.8
6
1st Class
15
23
19.5
6
2nd Class
16
25
20.2
6
3rd Class
17
25
19.8
6
4th Class
17
24
21.0
6
5th Class
17
24
21.3
6
6th Class
18
27
21.7
6
Total
85
186
127.9
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).