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
21.30
2025/26
Mainstream classes
10
2025/26
Largest class group
29
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
174
7
24.86
30
1
2007/08
180
7
25.71
30
1
2008/09
194
8
24.25
30
1
2009/10
197
8
24.62
30
1
2010/11
204
8
25.50
29
0
2011/12
203
7
29.00
33
4
2012/13
213
8
26.62
30
2
2013/14
232
9
25.78
30
1
2014/15
230
9
25.56
30
2
2015/16
232
9
25.78
31
1
2016/17
227
9
25.22
31
1
2017/18
245
9
27.22
31
4
2019/20
237
10
23.70
30
1
2020/21
240
11
21.82
28
0
2021/22
223
9
24.78
28
0
2022/23
219
9
24.33
27
0
2023/24
221
9
24.56
29
0
2024/25
224
9
24.89
32
1
2025/26
213
10
21.30
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1998/99: 47 in 1997/98 → 82, +35 pupils.
Biggest loss in a single year: 2021/22: 240 in 2020/21 → 223, -17 pupils.
Largest single-class increase: 5th Class in 2023/24 (17 → 32, +15).
Largest single-class decrease: 1st Class in 2023/24 (38 → 26, -12).
Largest cohort-step gain: JI → SI in 2023/24 (24 → 27, +3).
Largest cohort-step loss: SI → 1st in 2021/22 (32 → 29, -3).
Overall: 27 (1996/97) → 225 (2025/26), 198.
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
22
38
28.8
6
Senior Infants
24
37
28.8
6
1st Class
25
38
28.3
6
2nd Class
25
37
29.3
6
3rd Class
20
37
28.3
6
4th Class
18
36
28.0
6
5th Class
17
32
26.3
6
6th Class
17
35
27.3
6
Total
27
245
185.4
30
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).