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
21.50
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
106
4
26.50
34
1
2007/08
107
4
26.75
30
1
2008/09
114
4
28.50
33
1
2009/10
113
4
28.25
30
1
2010/11
123
4
30.75
34
2
2011/12
128
5
25.60
31
2
2012/13
133
5
26.60
33
2
2013/14
137
5
27.40
34
1
2014/15
134
5
26.80
33
2
2015/16
134
5
26.80
28
0
2016/17
145
5
29.00
35
2
2017/18
136
6
22.67
27
0
2019/20
129
5
25.80
29
0
2020/21
126
5
25.20
30
1
2021/22
127
5
25.40
29
0
2022/23
135
5
27.00
30
1
2023/24
144
6
24.00
32
1
2024/25
136
6
22.67
33
1
2025/26
129
6
21.50
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 134 in 2015/16 → 145, +11 pupils.
Biggest loss in a single year: 1993/94: 95 in 1983/84 → 67, -28 pupils.
Largest single-class increase: 5th Class in 2022/23 (16 → 28, +12).
Largest single-class decrease: 4th Class in 2022/23 (27 → 15, -12).
Largest cohort-step gain: 5th → 6th in 2024/25 (16 → 19, +3).
Largest cohort-step loss: 2nd → 3rd in 2025/26 (17 → 15, -2).
Overall: 108 (1974/75) → 129 (2025/26), 21.
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
19
16.5
6
Senior Infants
12
19
16.3
6
1st Class
11
19
16.0
6
2nd Class
11
18
15.0
6
3rd Class
11
25
16.3
6
4th Class
13
27
17.5
6
5th Class
13
28
16.8
6
6th Class
13
28
18.3
6
Total
67
145
110.3
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).