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
22.50
2025/26
Mainstream classes
4
2025/26
Largest class group
25
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
74
3
24.67
33
1
2007/08
81
3
27.00
29
0
2008/09
90
4
22.50
27
0
2009/10
100
4
25.00
28
0
2010/11
88
4
22.00
27
0
2011/12
96
4
24.00
29
0
2012/13
101
4
25.25
29
0
2013/14
102
4
25.50
30
2
2014/15
102
4
25.50
29
0
2015/16
115
4
28.75
33
2
2016/17
120
5
24.00
31
1
2017/18
126
5
25.20
29
0
2019/20
129
5
25.80
29
0
2020/21
118
5
23.60
29
0
2021/22
113
5
22.60
28
0
2022/23
113
5
22.60
27
0
2023/24
104
5
20.80
23
0
2024/25
95
5
19.00
29
0
2025/26
90
4
22.50
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1981/82: 129 in 1980/81 → 146, +17 pupils.
Biggest loss in a single year: 1999/00: 99 in 1998/99 → 83, -16 pupils.
Largest single-class increase: 5th Class in 2021/22 (15 → 20, +5).
Largest single-class decrease: 3rd Class in 2021/22 (23 → 13, -10).
Largest cohort-step gain: JI → SI in 2022/23 (10 → 12, +2).
Largest cohort-step loss: SI → 1st in 2024/25 (12 → 10, -2).
Overall: 96 (1975/76) → 90 (2025/26), -6.
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
13
11.0
6
Senior Infants
9
13
11.0
6
1st Class
9
13
10.7
6
2nd Class
10
14
11.5
6
3rd Class
10
23
13.7
6
4th Class
10
22
15.0
6
5th Class
11
22
16.0
6
6th Class
14
23
16.7
6
Total
72
158
107.6
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).