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
25.71
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
160
6
26.67
32
1
2007/08
166
6
27.67
32
2
2008/09
161
6
26.83
33
3
2009/10
180
7
25.71
32
1
2010/11
173
7
24.71
34
1
2011/12
167
7
23.86
34
1
2012/13
164
6
27.33
35
3
2013/14
174
6
29.00
33
2
2014/15
168
7
24.00
31
2
2015/16
156
6
26.00
34
3
2016/17
151
6
25.17
28
0
2017/18
151
6
25.17
36
1
2019/20
159
6
26.50
31
2
2020/21
147
7
21.00
29
0
2021/22
150
6
25.00
32
1
2022/23
159
6
26.50
33
3
2023/24
165
6
27.50
34
3
2024/25
176
7
25.14
31
2
2025/26
180
7
25.71
31
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2009/10: 161 in 2008/09 → 180, +19 pupils.
Biggest loss in a single year: 1996/97: 143 in 1995/96 → 129, -14 pupils.
Largest single-class increase: 2nd Class in 2021/22 (16 → 25, +9).
Largest single-class decrease: 5th Class in 2022/23 (21 → 13, -8).
Largest cohort-step gain: JI → SI in 2023/24 (25 → 27, +2).
Largest cohort-step loss: JI → SI in 2025/26 (21 → 20, -1).
Overall: 111 (1975/76) → 180 (2025/26), 69.
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
18
25
21.2
6
Senior Infants
18
27
21.0
6
1st Class
19
28
22.3
6
2nd Class
16
28
21.3
6
3rd Class
13
24
18.8
6
4th Class
13
24
19.5
6
5th Class
13
25
19.3
6
6th Class
13
26
19.3
6
Total
111
180
144.4
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).