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
25.23
2025/26
Mainstream classes
13
2025/26
Largest class group
28
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
294
13
22.62
29
0
2007/08
304
13
23.38
30
1
2008/09
321
13
24.69
30
1
2009/10
306
13
23.54
28
0
2010/11
295
13
22.69
30
1
2011/12
295
12
24.58
30
1
2012/13
281
11
25.55
33
2
2013/14
277
11
25.18
35
1
2014/15
276
11
25.09
33
1
2015/16
298
11
27.09
34
2
2016/17
330
12
27.50
35
4
2017/18
332
12
27.67
35
4
2019/20
345
13
26.54
37
4
2020/21
327
13
25.15
33
1
2021/22
346
13
26.62
36
2
2022/23
355
14
25.36
35
3
2023/24
337
15
22.47
31
5
2024/25
304
14
21.71
32
2
2025/26
328
13
25.23
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 298 in 2015/16 → 330, +32 pupils.
Biggest loss in a single year: 1993/94: 441 in 1983/84 → 368, -73 pupils.
Largest single-class increase: 6th Class in 2023/24 (39 → 61, +22).
Largest single-class decrease: 6th Class in 2024/25 (61 → 28, -33).
Largest cohort-step gain: 2nd → 3rd in 2021/22 (24 → 29, +5).
Largest cohort-step loss: SI → 1st in 2023/24 (75 → 36, -39).
Overall: 458 (1975/76) → 328 (2025/26), -130.
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
76
57.8
6
Senior Infants
45
75
57.2
6
1st Class
26
39
33.0
6
2nd Class
24
39
33.0
6
3rd Class
29
51
36.0
6
4th Class
30
52
37.0
6
5th Class
30
57
38.7
6
6th Class
28
61
40.2
6
Total
276
465
351.7
42
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).