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
19.11
2025/26
Mainstream classes
19
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
197
8
24.62
28
0
2007/08
249
10
24.90
35
1
2008/09
290
12
24.17
29
0
2009/10
323
12
26.92
36
5
2010/11
324
13
24.92
32
5
2011/12
370
14
26.43
35
4
2012/13
377
14
26.93
34
5
2013/14
376
14
26.86
34
5
2014/15
368
14
26.29
33
5
2015/16
343
14
24.50
31
4
2016/17
340
13
26.15
32
5
2017/18
339
13
26.08
34
6
2019/20
347
13
26.69
34
4
2020/21
358
16
22.38
33
2
2021/22
365
16
22.81
31
1
2022/23
364
19
19.16
27
0
2023/24
362
19
19.05
25
0
2024/25
349
19
18.37
27
0
2025/26
363
19
19.11
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2004/05: 23 in 2003/04 → 92, +69 pupils.
Biggest loss in a single year: 2015/16: 368 in 2014/15 → 343, -25 pupils.
Largest single-class increase: 2nd Class in 2025/26 (39 → 58, +19).
Largest single-class decrease: Senior Infants in 2024/25 (52 → 32, -20).
Largest cohort-step gain: JI → SI in 2022/23 (34 → 41, +7).
Largest cohort-step loss: 1st → 2nd in 2024/25 (46 → 39, -7).
Overall: 23 (2003/04) → 375 (2025/26), 352.
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
29
49
38.5
6
Senior Infants
32
52
42.5
6
1st Class
34
53
45.3
6
2nd Class
36
58
45.7
6
3rd Class
40
53
46.7
6
4th Class
41
56
48.8
6
5th Class
44
58
48.7
6
6th Class
43
50
48.0
6
Total
23
377
311.3
23
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).