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
23.65
2025/26
Mainstream classes
17
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
36
2
18.00
21
0
2007/08
68
3
22.67
29
0
2008/09
108
4
27.00
28
0
2009/10
127
5
25.40
33
1
2010/11
151
6
25.17
33
2
2011/12
164
6
27.33
34
3
2012/13
188
7
26.86
33
3
2013/14
196
8
24.50
28
0
2014/15
222
8
27.75
33
4
2015/16
228
8
28.50
30
4
2016/17
219
8
27.38
30
1
2017/18
212
8
26.50
29
0
2019/20
281
11
25.55
31
4
2020/21
306
12
25.50
31
2
2021/22
337
14
24.07
32
2
2022/23
344
14
24.57
30
1
2023/24
375
16
23.44
29
0
2024/25
403
17
23.71
28
0
2025/26
402
17
23.65
31
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2018/19: 212 in 2017/18 → 266, +54 pupils.
Biggest loss in a single year: 2016/17: 228 in 2015/16 → 219, -9 pupils.
Largest single-class increase: 2nd Class in 2021/22 (31 → 56, +25).
Largest single-class decrease: Senior Infants in 2025/26 (67 → 51, -16).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (48 → 55, +7).
Largest cohort-step loss: JI → SI in 2025/26 (57 → 51, -6).
Overall: 36 (2006/07) → 420 (2025/26), 384.
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
42
63
54.8
6
Senior Infants
50
67
55.8
6
1st Class
47
63
54.0
6
2nd Class
31
56
48.2
6
3rd Class
30
55
45.0
6
4th Class
28
54
40.3
6
5th Class
28
49
35.5
6
6th Class
24
52
31.0
6
Total
36
421
236.4
20
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).