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
25.89
2025/26
Mainstream classes
18
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
323
11
29.36
34
7
2007/08
313
12
26.08
32
4
2008/09
319
12
26.58
32
4
2009/10
310
12
25.83
33
3
2010/11
300
11
27.27
35
4
2011/12
308
11
28.00
35
4
2012/13
334
12
27.83
35
4
2013/14
360
13
27.69
34
4
2014/15
385
14
27.50
34
5
2015/16
427
16
26.69
33
6
2016/17
427
16
26.69
32
4
2017/18
437
16
27.31
31
3
2019/20
433
16
27.06
30
2
2020/21
426
16
26.62
31
2
2021/22
442
17
26.00
30
1
2022/23
439
18
24.39
30
1
2023/24
436
18
24.22
29
0
2024/25
442
17
26.00
28
0
2025/26
466
18
25.89
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2015/16: 385 in 2014/15 → 427, +42 pupils.
Biggest loss in a single year: 1980/81: 230 in 1979/80 → 216, -14 pupils.
Largest single-class increase: 3rd Class in 2025/26 (53 → 74, +21).
Largest single-class decrease: 1st Class in 2024/25 (70 → 53, -17).
Largest cohort-step gain: 5th → 6th in 2024/25 (42 → 54, +12).
Largest cohort-step loss: 4th → 5th in 2023/24 (53 → 42, -11).
Overall: 222 (1975/76) → 466 (2025/26), 244.
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
48
66
55.3
6
Senior Infants
45
67
53.7
6
1st Class
47
70
55.3
6
2nd Class
46
71
55.7
6
3rd Class
47
74
56.2
6
4th Class
49
58
54.3
6
5th Class
42
58
53.0
6
6th Class
54
66
58.3
6
Total
216
466
319.9
41
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).