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
21.92
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
520
19
27.37
30
4
2007/08
495
19
26.05
31
4
2008/09
490
19
25.79
31
4
2009/10
472
18
26.22
32
3
2010/11
420
18
23.33
29
0
2011/12
430
16
26.88
34
6
2012/13
432
16
27.00
36
5
2013/14
422
16
26.38
33
5
2014/15
395
16
24.69
32
3
2015/16
377
15
25.13
30
2
2016/17
352
15
23.47
33
2
2017/18
337
14
24.07
34
2
2019/20
370
15
24.67
37
1
2020/21
348
14
24.86
39
1
2021/22
333
14
23.79
38
1
2022/23
342
14
24.43
29
0
2023/24
307
13
23.62
28
0
2024/25
306
13
23.54
28
0
2025/26
285
13
21.92
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 601 in 1983/84 → 672, +71 pupils.
Biggest loss in a single year: 1994/95: 672 in 1993/94 → 605, -67 pupils.
Largest single-class increase: 2nd Class in 2024/25 (22 → 50, +28).
Largest single-class decrease: 2nd Class in 2023/24 (51 → 22, -29).
Largest cohort-step gain: 4th → 5th in 2024/25 (41 → 49, +8).
Largest cohort-step loss: 1st → 2nd in 2021/22 (48 → 40, -8).
Overall: 485 (1975/76) → 297 (2025/26), -188.
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
26
44
32.0
6
Senior Infants
23
44
33.3
6
1st Class
25
48
36.5
6
2nd Class
22
51
39.8
6
3rd Class
26
50
42.8
6
4th Class
27
53
43.3
6
5th Class
39
52
47.7
6
6th Class
38
56
48.2
6
Total
297
672
494.9
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).