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
21.83
2025/26
Mainstream classes
6
2025/26
Largest class group
33
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
106
4
26.50
29
0
2007/08
116
4
29.00
34
2
2008/09
120
5
24.00
30
1
2009/10
122
5
24.40
28
0
2010/11
123
5
24.60
29
0
2011/12
124
5
24.80
31
1
2012/13
124
5
24.80
33
1
2013/14
125
5
25.00
33
1
2014/15
130
5
26.00
32
3
2015/16
132
5
26.40
34
3
2016/17
132
5
26.40
34
3
2017/18
135
5
27.00
36
3
2019/20
146
6
24.33
37
2
2020/21
151
6
25.17
29
0
2021/22
151
7
21.57
28
0
2022/23
141
6
23.50
31
1
2023/24
143
6
23.83
31
2
2024/25
138
6
23.00
30
1
2025/26
131
6
21.83
33
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2018/19: 135 in 2017/18 → 146, +11 pupils.
Biggest loss in a single year: 1980/81: 112 in 1979/80 → 103, -9 pupils.
Largest single-class increase: Senior Infants in 2024/25 (10 → 23, +13).
Largest single-class decrease: 4th Class in 2024/25 (26 → 11, -15).
Largest cohort-step gain: 1st → 2nd in 2025/26 (11 → 13, +2).
Largest cohort-step loss: 3rd → 4th in 2024/25 (14 → 11, -3).
Overall: 95 (1974/75) → 136 (2025/26), 41.
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
15.8
6
Senior Infants
10
23
16.3
6
1st Class
11
26
18.3
6
2nd Class
13
26
18.0
6
3rd Class
14
26
18.5
6
4th Class
11
26
18.5
6
5th Class
12
26
18.7
6
6th Class
17
26
19.7
6
Total
87
151
116.4
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).