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
18.90
2025/26
Mainstream classes
20
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
272
15
18.13
32
1
2007/08
218
13
16.77
28
0
2008/09
193
13
14.85
28
0
2009/10
182
12
15.17
27
0
2010/11
164
11
14.91
24
0
2011/12
167
10
16.70
24
0
2012/13
168
9
18.67
25
0
2013/14
192
10
19.20
24
0
2014/15
205
11
18.64
24
0
2015/16
223
12
18.58
25
0
2016/17
253
13
19.46
26
0
2017/18
284
14
20.29
26
0
2019/20
319
16
19.94
24
0
2020/21
299
16
18.69
24
0
2021/22
343
17
20.18
25
0
2022/23
359
18
19.94
23
0
2023/24
400
20
20.00
26
0
2024/25
390
20
19.50
26
0
2025/26
378
20
18.90
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2021/22: 323 in 2020/21 → 367, +44 pupils.
Biggest loss in a single year: 2004/05: 424 in 2003/04 → 344, -80 pupils.
Largest single-class increase: 1st Class in 2023/24 (52 → 74, +22).
Largest single-class decrease: 1st Class in 2024/25 (74 → 47, -27).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (40 → 48, +8).
Largest cohort-step loss: 1st → 2nd in 2024/25 (74 → 70, -4).
Overall: 725 (1993/94) → 403 (2025/26), -322.
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
38
69
49.7
6
Senior Infants
38
69
49.0
6
1st Class
39
74
50.7
6
2nd Class
40
70
49.5
6
3rd Class
44
72
51.5
6
4th Class
33
58
45.2
6
5th Class
32
51
41.8
6
6th Class
28
50
38.7
6
Total
171
725
389.3
33
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).