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
26.33
2025/26
Mainstream classes
6
2025/26
Largest class group
30
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
103
4
25.75
31
1
2007/08
99
4
24.75
27
0
2008/09
96
4
24.00
29
0
2009/10
108
4
27.00
33
2
2010/11
104
4
26.00
30
1
2011/12
105
4
26.25
29
0
2012/13
106
4
26.50
30
1
2013/14
101
4
25.25
34
1
2014/15
110
4
27.50
32
1
2015/16
119
4
29.75
35
3
2016/17
118
5
23.60
29
0
2017/18
130
5
26.00
33
2
2019/20
143
5
28.60
32
2
2020/21
147
6
24.50
29
0
2021/22
152
8
19.00
29
0
2022/23
149
6
24.83
34
2
2023/24
152
6
25.33
28
0
2024/25
146
6
24.33
28
0
2025/26
158
6
26.33
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 102 in 1982/83 → 132, +30 pupils.
Biggest loss in a single year: 1998/99: 123 in 1997/98 → 108, -15 pupils.
Largest single-class increase: 4th Class in 2024/25 (15 → 27, +12).
Largest single-class decrease: 1st Class in 2022/23 (26 → 15, -11).
Largest cohort-step gain: 2nd → 3rd in 2024/25 (16 → 18, +2).
Largest cohort-step loss: SI → 1st in 2022/23 (16 → 15, -1).
Overall: 105 (1979/80) → 158 (2025/26), 53.
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
23
17.8
6
Senior Infants
12
26
18.5
6
1st Class
15
26
19.0
6
2nd Class
15
25
19.5
6
3rd Class
15
26
19.7
6
4th Class
15
27
19.2
6
5th Class
15
27
19.3
6
6th Class
15
20
17.7
6
Total
83
158
115.6
37
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).