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
24.06
2025/26
Mainstream classes
16
2025/26
Largest class group
27
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
160
6
26.67
31
2
2007/08
162
7
23.14
27
0
2008/09
127
7
18.14
26
0
2009/10
153
5
30.60
35
4
2010/11
157
7
22.43
28
0
2011/12
203
7
29.00
33
4
2012/13
207
7
29.57
35
4
2013/14
228
9
25.33
34
2
2014/15
243
9
27.00
34
4
2015/16
238
10
23.80
30
1
2016/17
249
11
22.64
30
1
2017/18
267
11
24.27
30
2
2019/20
310
12
25.83
29
0
2020/21
337
12
28.08
31
4
2021/22
372
14
26.57
31
4
2022/23
410
16
25.62
30
1
2023/24
400
17
23.53
27
0
2024/25
400
16
25.00
27
0
2025/26
385
16
24.06
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2002/03: 58 in 2001/02 → 125, +67 pupils.
Biggest loss in a single year: 2005/06: 185 in 2004/05 → 147, -38 pupils.
Largest single-class increase: Junior Infants in 2021/22 (42 → 54, +12).
Largest single-class decrease: Senior Infants in 2023/24 (56 → 50, -6).
Largest cohort-step gain: JI → SI in 2021/22 (42 → 51, +9).
Largest cohort-step loss: 4th → 5th in 2023/24 (55 → 49, -6).
Overall: 58 (2001/02) → 391 (2025/26), 333.
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
54
48.0
6
Senior Infants
43
56
49.5
6
1st Class
46
54
50.0
6
2nd Class
41
54
50.2
6
3rd Class
46
53
49.0
6
4th Class
43
55
49.0
6
5th Class
32
51
44.8
6
6th Class
38
50
44.5
6
Total
58
416
240.4
25
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).