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
23.88
2025/26
Mainstream classes
8
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
127
5
25.40
29
0
2007/08
133
5
26.60
30
1
2008/09
137
5
27.40
30
1
2009/10
144
5
28.80
35
2
2010/11
144
6
24.00
32
1
2011/12
166
6
27.67
35
4
2012/13
159
6
26.50
31
3
2013/14
170
6
28.33
30
1
2014/15
174
7
24.86
30
1
2015/16
180
7
25.71
31
2
2016/17
181
7
25.86
35
3
2017/18
186
7
26.57
33
3
2019/20
192
8
24.00
32
1
2020/21
210
8
26.25
34
2
2021/22
197
8
24.62
31
1
2022/23
190
8
23.75
29
0
2023/24
192
8
24.00
28
0
2024/25
196
8
24.50
30
1
2025/26
191
8
23.88
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2011/12: 146 in 2010/11 → 168, +22 pupils.
Biggest loss in a single year: 2021/22: 222 in 2020/21 → 209, -13 pupils.
Largest single-class increase: Senior Infants in 2024/25 (17 → 32, +15).
Largest single-class decrease: 6th Class in 2021/22 (34 → 22, -12).
Largest cohort-step gain: JI → SI in 2025/26 (22 → 25, +3).
Largest cohort-step loss: SI → 1st in 2022/23 (29 → 27, -2).
Overall: 113 (1975/76) → 203 (2025/26), 90.
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
17
30
23.3
6
Senior Infants
17
32
24.7
6
1st Class
17
32
25.3
6
2nd Class
19
31
24.7
6
3rd Class
21
29
24.5
6
4th Class
22
28
25.3
6
5th Class
22
29
24.7
6
6th Class
22
34
26.8
6
Total
87
222
141.4
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).