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
23.57
2025/26
Mainstream classes
7
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
49
3
16.33
17
0
2007/08
49
3
16.33
20
0
2008/09
85
3
28.33
30
1
2009/10
85
4
21.25
29
0
2010/11
91
4
22.75
30
1
2011/12
88
4
22.00
28
0
2012/13
99
4
24.75
34
1
2013/14
121
5
24.20
29
0
2014/15
131
5
26.20
35
2
2015/16
151
6
25.17
32
1
2016/17
160
6
26.67
35
2
2017/18
166
7
23.71
31
1
2019/20
172
7
24.57
31
1
2020/21
167
7
23.86
29
0
2021/22
166
7
23.71
32
2
2022/23
172
7
24.57
32
2
2023/24
180
7
25.71
32
2
2024/25
169
8
21.12
26
0
2025/26
165
7
23.57
31
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 49 in 2007/08 → 85, +36 pupils.
Biggest loss in a single year: 2024/25: 198 in 2023/24 → 187, -11 pupils.
Largest single-class increase: 2nd Class in 2023/24 (17 → 24, +7).
Largest single-class decrease: Junior Infants in 2024/25 (30 → 20, -10).
Largest cohort-step gain: 3rd → 4th in 2023/24 (22 → 27, +5).
Largest cohort-step loss: JI → SI in 2023/24 (28 → 25, -3).
Overall: 39 (1975/76) → 183 (2025/26), 144.
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
16
30
23.0
6
Senior Infants
19
28
23.0
6
1st Class
17
29
24.0
6
2nd Class
17
25
22.3
6
3rd Class
17
24
21.5
6
4th Class
17
27
21.8
6
5th Class
16
28
21.5
6
6th Class
16
29
22.2
6
Total
33
198
94.8
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).