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
23.31
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
223
8
27.88
32
3
2007/08
233
8
29.12
32
2
2008/09
233
9
25.89
32
2
2009/10
230
8
28.75
31
2
2010/11
232
8
29.00
32
2
2011/12
227
9
25.22
30
1
2012/13
234
8
29.25
33
3
2013/14
268
10
26.80
34
3
2014/15
276
10
27.60
34
4
2015/16
277
10
27.70
35
4
2016/17
276
10
27.60
34
5
2017/18
280
10
28.00
34
5
2019/20
273
10
27.30
31
5
2020/21
287
11
26.09
32
6
2021/22
303
12
25.25
33
4
2022/23
362
14
25.86
37
2
2023/24
389
16
24.31
29
0
2024/25
395
16
24.69
28
0
2025/26
373
16
23.31
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2022/23: 303 in 2021/22 → 362, +59 pupils.
Biggest loss in a single year: 2025/26: 407 in 2024/25 → 385, -22 pupils.
Largest single-class increase: 2nd Class in 2022/23 (33 → 55, +22).
Largest single-class decrease: 6th Class in 2021/22 (60 → 32, -28).
Largest cohort-step gain: SI → 1st in 2021/22 (31 → 43, +12).
Largest cohort-step loss: 1st → 2nd in 2025/26 (48 → 42, -6).
Overall: 104 (1974/75) → 385 (2025/26), 281.
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
30
49
44.0
6
Senior Infants
31
51
41.8
6
1st Class
29
50
42.8
6
2nd Class
33
55
43.0
6
3rd Class
36
56
46.0
6
4th Class
32
56
46.5
6
5th Class
31
53
43.8
6
6th Class
32
60
46.5
6
Total
104
407
228.5
43
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).