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
27.60
2025/26
Mainstream classes
5
2025/26
Largest class group
34
2025/26
Classes with 30+ pupils
3
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
121
5
24.20
26
0
2007/08
127
5
25.40
28
0
2008/09
119
5
23.80
32
1
2009/10
129
5
25.80
28
0
2010/11
123
5
24.60
27
0
2011/12
128
5
25.60
32
1
2012/13
127
5
25.40
26
0
2013/14
126
5
25.20
28
0
2014/15
133
5
26.60
34
1
2015/16
121
5
24.20
32
1
2016/17
116
5
23.20
29
0
2017/18
114
5
22.80
28
0
2019/20
115
5
23.00
25
0
2020/21
109
6
18.17
27
0
2021/22
117
6
19.50
28
0
2022/23
119
5
23.80
27
0
2023/24
129
5
25.80
31
1
2024/25
137
5
27.40
35
2
2025/26
138
5
27.60
34
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2000/01: 124 in 1999/00 → 137, +13 pupils.
Biggest loss in a single year: 2003/04: 135 in 2002/03 → 121, -14 pupils.
Largest single-class increase: Junior Infants in 2023/24 (10 → 20, +10).
Largest single-class decrease: Junior Infants in 2022/23 (16 → 10, -6).
Largest cohort-step gain: SI → 1st in 2022/23 (12 → 15, +3).
Largest cohort-step loss: 3rd → 4th in 2024/25 (19 → 17, -2).
Overall: 142 (1974/75) → 138 (2025/26), -4.
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
10
21
16.2
6
Senior Infants
12
21
16.0
6
1st Class
11
21
15.8
6
2nd Class
11
18
15.5
6
3rd Class
12
19
16.2
6
4th Class
12
17
15.3
6
5th Class
12
18
15.7
6
6th Class
10
17
14.2
6
Total
109
149
131.2
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).