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
24.33
2025/26
Mainstream classes
6
2025/26
Largest class group
26
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
151
5
30.20
35
3
2007/08
152
6
25.33
29
0
2008/09
154
6
25.67
29
0
2009/10
152
6
25.33
27
0
2010/11
149
6
24.83
26
0
2011/12
156
6
26.00
28
0
2012/13
134
6
22.33
23
0
2013/14
133
5
26.60
27
0
2014/15
125
5
25.00
26
0
2015/16
130
5
26.00
30
1
2016/17
151
6
25.17
27
0
2017/18
154
6
25.67
29
0
2019/20
177
7
25.29
30
1
2020/21
172
7
24.57
31
2
2021/22
165
8
20.62
27
0
2022/23
172
6
28.67
31
2
2023/24
159
7
22.71
29
0
2024/25
150
6
25.00
28
0
2025/26
146
6
24.33
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 106 in 1982/83 → 165, +59 pupils.
Biggest loss in a single year: 2012/13: 156 in 2011/12 → 134, -22 pupils.
Largest single-class increase: 1st Class in 2024/25 (14 → 23, +9).
Largest single-class decrease: 5th Class in 2023/24 (30 → 18, -12).
Largest cohort-step gain: 4th → 5th in 2022/23 (27 → 30, +3).
Largest cohort-step loss: SI → 1st in 2021/22 (24 → 22, -2).
Overall: 138 (1975/76) → 152 (2025/26), 14.
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
22
17.5
6
Senior Infants
13
24
18.2
6
1st Class
14
25
19.0
6
2nd Class
15
26
20.0
6
3rd Class
15
27
20.8
6
4th Class
16
27
21.5
6
5th Class
17
30
21.8
6
6th Class
18
29
22.8
6
Total
106
177
141.5
41
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).