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
21.38
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
131
6
21.83
27
0
2007/08
153
6
25.50
30
2
2008/09
167
7
23.86
30
1
2009/10
195
7
27.86
33
3
2010/11
198
8
24.75
30
1
2011/12
213
7
30.43
33
5
2012/13
223
8
27.88
33
3
2013/14
234
8
29.25
32
4
2014/15
238
9
26.44
32
4
2015/16
256
10
25.60
32
4
2016/17
263
11
23.91
32
2
2017/18
292
11
26.55
32
4
2019/20
324
13
24.92
33
2
2020/21
343
14
24.50
30
1
2021/22
359
15
23.93
30
1
2022/23
355
16
22.19
29
0
2023/24
348
16
21.75
28
0
2024/25
341
16
21.31
27
0
2025/26
342
16
21.38
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 97 in 2005/06 → 131, +34 pupils.
Biggest loss in a single year: 2002/03: 112 in 2001/02 → 85, -27 pupils.
Largest single-class increase: Junior Infants in 2025/26 (43 → 56, +13).
Largest single-class decrease: 1st Class in 2021/22 (58 → 45, -13).
Largest cohort-step gain: JI → SI in 2023/24 (43 → 44, +1).
Largest cohort-step loss: SI → 1st in 2022/23 (49 → 45, -4).
Overall: 35 (1998/99) → 360 (2025/26), 325.
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
39
56
46.3
6
Senior Infants
40
49
44.2
6
1st Class
39
58
45.8
6
2nd Class
42
57
46.8
6
3rd Class
42
56
46.7
6
4th Class
35
53
44.2
6
5th Class
30
52
41.7
6
6th Class
29
52
39.0
6
Total
35
371
215.8
28
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).