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
25.56
2025/26
Mainstream classes
16
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
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
227
8
28.38
31
3
2007/08
229
8
28.62
30
3
2008/09
246
9
27.33
32
3
2009/10
274
10
27.40
31
1
2010/11
290
11
26.36
30
1
2011/12
323
12
26.92
30
1
2012/13
350
13
26.92
29
0
2013/14
379
14
27.07
29
0
2014/15
411
15
27.40
30
1
2015/16
438
16
27.38
30
2
2016/17
448
16
28.00
30
3
2017/18
455
16
28.44
30
7
2019/20
459
16
28.69
31
7
2020/21
455
16
28.44
31
6
2021/22
459
17
27.00
31
8
2022/23
446
17
26.24
31
4
2023/24
437
17
25.71
31
4
2024/25
427
16
26.69
30
1
2025/26
409
16
25.56
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1998/99: 64 in 1997/98 → 125, +61 pupils.
Biggest loss in a single year: 2022/23: 459 in 2021/22 → 446, -13 pupils.
Largest single-class increase: 6th Class in 2021/22 (51 → 60, +9).
Largest single-class decrease: 2nd Class in 2022/23 (61 → 54, -7).
Largest cohort-step gain: 2nd → 3rd in 2024/25 (48 → 49, +1).
Largest cohort-step loss: SI → 1st in 2022/23 (54 → 50, -4).
Overall: 64 (1997/98) → 415 (2025/26), 351.
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
49
54
51.7
6
Senior Infants
49
56
53.0
6
1st Class
50
61
54.0
6
2nd Class
48
61
54.8
6
3rd Class
49
60
56.0
6
4th Class
49
61
56.3
6
5th Class
53
61
57.7
6
6th Class
51
60
56.3
6
Total
64
459
321.4
29
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).