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
16.86
2025/26
Mainstream classes
14
2025/26
Largest class group
24
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
37
2
18.50
20
0
2007/08
57
3
19.00
27
0
2008/09
84
5
16.80
20
0
2009/10
111
6
18.50
21
0
2010/11
143
7
20.43
24
0
2011/12
188
9
20.89
24
0
2012/13
228
11
20.73
28
0
2013/14
235
11
21.36
31
1
2014/15
265
12
22.08
27
0
2015/16
292
14
20.86
26
0
2016/17
320
15
21.33
26
0
2017/18
326
15
21.73
26
0
2019/20
344
16
21.50
23
0
2020/21
330
16
20.62
23
0
2021/22
306
16
19.12
23
0
2022/23
291
16
18.19
22
0
2023/24
280
15
18.67
26
0
2024/25
257
14
18.36
26
0
2025/26
236
14
16.86
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2011/12: 143 in 2010/11 → 188, +45 pupils.
Biggest loss in a single year: 2021/22: 330 in 2020/21 → 306, -24 pupils.
Largest single-class increase: 1st Class in 2024/25 (26 → 37, +11).
Largest single-class decrease: Junior Infants in 2024/25 (41 → 24, -17).
Largest cohort-step gain: SI → 1st in 2025/26 (41 → 44, +3).
Largest cohort-step loss: 1st → 2nd in 2021/22 (41 → 36, -5).
Overall: 22 (2005/06) → 248 (2025/26), 226.
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
24
41
31.7
6
Senior Infants
24
43
33.3
6
1st Class
26
44
36.2
6
2nd Class
26
45
35.3
6
3rd Class
25
43
35.2
6
4th Class
27
44
36.5
6
5th Class
28
45
38.2
6
6th Class
29
45
39.0
6
Total
22
344
225.1
21
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).