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
22.44
2025/26
Mainstream classes
16
2025/26
Largest class group
25
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
122
5
24.40
28
0
2007/08
162
6
27.00
29
0
2008/09
183
7
26.14
29
0
2009/10
207
8
25.88
31
1
2010/11
231
9
25.67
32
3
2011/12
257
10
25.70
33
4
2012/13
271
11
24.64
37
4
2013/14
277
10
27.70
34
5
2014/15
300
11
27.27
36
4
2015/16
305
11
27.73
36
5
2016/17
348
13
26.77
32
5
2017/18
362
14
25.86
32
2
2019/20
395
16
24.69
29
0
2020/21
406
16
25.38
30
1
2021/22
379
16
23.69
27
0
2022/23
385
16
24.06
28
0
2023/24
372
16
23.25
26
0
2024/25
365
16
22.81
26
0
2025/26
359
16
22.44
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 315 in 2015/16 → 360, +45 pupils.
Biggest loss in a single year: 2021/22: 422 in 2020/21 → 395, -27 pupils.
Largest single-class increase: 5th Class in 2022/23 (42 → 55, +13).
Largest single-class decrease: 6th Class in 2021/22 (58 → 44, -14).
Largest cohort-step gain: 1st → 2nd in 2022/23 (44 → 48, +4).
Largest cohort-step loss: 2nd → 3rd in 2022/23 (51 → 47, -4).
Overall: 20 (2003/04) → 377 (2025/26), 357.
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
45
52
47.5
6
Senior Infants
45
49
46.5
6
1st Class
44
53
47.0
6
2nd Class
43
53
48.7
6
3rd Class
45
56
48.5
6
4th Class
45
52
47.7
6
5th Class
42
55
47.2
6
6th Class
43
58
48.7
6
Total
20
422
280.3
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).