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
23.60
2025/26
Mainstream classes
5
2025/26
Largest class group
31
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
125
5
25.00
30
1
2007/08
127
5
25.40
30
1
2008/09
127
5
25.40
30
1
2009/10
122
5
24.40
31
1
2010/11
123
5
24.60
29
0
2011/12
128
5
25.60
35
1
2012/13
124
5
24.80
28
0
2013/14
132
5
26.40
28
0
2014/15
130
5
26.00
31
1
2015/16
132
5
26.40
30
1
2016/17
147
5
29.40
33
3
2017/18
155
6
25.83
34
1
2019/20
156
6
26.00
33
1
2020/21
154
6
25.67
31
2
2021/22
145
6
24.17
32
2
2022/23
141
7
20.14
30
1
2023/24
140
6
23.33
29
0
2024/25
124
6
20.67
28
0
2025/26
118
5
23.60
31
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 132 in 2015/16 → 147, +15 pupils.
Biggest loss in a single year: 2024/25: 140 in 2023/24 → 124, -16 pupils.
Largest single-class increase: 4th Class in 2021/22 (14 → 28, +14).
Largest single-class decrease: 3rd Class in 2021/22 (28 → 17, -11).
Largest cohort-step gain: 1st → 2nd in 2023/24 (14 → 15, +1).
Largest cohort-step loss: JI → SI in 2022/23 (17 → 16, -1).
Overall: 149 (1974/75) → 118 (2025/26), -31.
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
17
13.8
6
Senior Infants
11
17
14.0
6
1st Class
13
20
15.5
6
2nd Class
13
20
16.2
6
3rd Class
15
28
18.8
6
4th Class
14
28
18.7
6
5th Class
14
28
19.3
6
6th Class
14
27
20.7
6
Total
116
156
134.7
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).