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
21.17
2025/26
Mainstream classes
6
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
193
8
24.12
35
1
2007/08
203
8
25.38
32
2
2008/09
208
8
26.00
32
2
2009/10
234
9
26.00
31
3
2010/11
245
9
27.22
32
3
2011/12
244
9
27.11
32
3
2012/13
241
9
26.78
31
1
2013/14
246
9
27.33
31
1
2014/15
246
9
27.33
30
1
2015/16
245
9
27.22
30
1
2016/17
239
9
26.56
30
1
2017/18
207
9
23.00
30
1
2019/20
203
8
25.38
29
0
2020/21
183
8
22.88
28
0
2021/22
167
7
23.86
28
0
2022/23
147
8
18.38
28
0
2023/24
136
6
22.67
27
0
2024/25
125
6
20.83
26
0
2025/26
127
6
21.17
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 62 in 1983/84 → 243, +181 pupils.
Biggest loss in a single year: 2017/18: 239 in 2016/17 → 207, -32 pupils.
Largest single-class increase: Senior Infants in 2025/26 (14 → 23, +9).
Largest single-class decrease: 1st Class in 2022/23 (24 → 12, -12).
Largest cohort-step gain: JI → SI in 2025/26 (17 → 23, +6).
Largest cohort-step loss: 3rd → 4th in 2021/22 (27 → 24, -3).
Overall: 16 (1980/81) → 138 (2025/26), 122.
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
10
19
14.5
6
Senior Infants
11
25
16.7
6
1st Class
11
24
15.7
6
2nd Class
11
24
16.7
6
3rd Class
11
27
19.0
6
4th Class
15
28
21.3
6
5th Class
18
28
22.8
6
6th Class
18
28
22.8
6
Total
16
249
189.5
37
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).