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
22.10
2025/26
Mainstream classes
10
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
2
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
198
7
28.29
35
4
2007/08
195
7
27.86
35
3
2008/09
220
8
27.50
31
4
2009/10
220
8
27.50
34
3
2010/11
236
8
29.50
40
4
2011/12
241
9
26.78
34
2
2012/13
247
9
27.44
33
2
2013/14
247
9
27.44
35
2
2014/15
256
9
28.44
37
3
2015/16
260
9
28.89
37
4
2016/17
245
10
24.50
32
2
2017/18
244
9
27.11
32
1
2019/20
228
9
25.33
33
1
2020/21
230
9
25.56
34
1
2021/22
245
9
27.22
34
4
2022/23
226
10
22.60
33
3
2023/24
224
10
22.40
33
1
2024/25
216
10
21.60
31
1
2025/26
221
10
22.10
31
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 195 in 2007/08 → 220, +25 pupils.
Biggest loss in a single year: 2019/20: 247 in 2018/19 → 228, -19 pupils.
Largest single-class increase: Junior Infants in 2021/22 (25 → 37, +12).
Largest single-class decrease: Junior Infants in 2022/23 (37 → 28, -9).
Largest cohort-step gain: SI → 1st in 2025/26 (28 → 30, +2).
Largest cohort-step loss: 3rd → 4th in 2022/23 (27 → 23, -4).
Overall: 79 (1975/76) → 221 (2025/26), 142.
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
21
37
27.5
6
Senior Infants
24
34
28.0
6
1st Class
22
35
29.8
6
2nd Class
23
34
28.8
6
3rd Class
22
33
28.5
6
4th Class
23
33
27.3
6
5th Class
22
34
29.0
6
6th Class
22
34
28.0
6
Total
76
260
168.6
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).