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
23.42
2025/26
Mainstream classes
19
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
385
14
27.50
32
3
2007/08
388
14
27.71
32
4
2008/09
381
14
27.21
33
3
2009/10
402
14
28.71
32
4
2010/11
402
15
26.80
33
5
2011/12
420
15
28.00
33
4
2012/13
409
15
27.27
31
2
2013/14
411
15
27.40
33
2
2014/15
415
15
27.67
32
3
2015/16
415
15
27.67
34
3
2016/17
418
16
26.12
29
0
2017/18
417
16
26.06
30
3
2019/20
414
16
25.88
29
0
2020/21
407
16
25.44
29
0
2021/22
430
16
26.88
34
3
2022/23
440
17
25.88
34
3
2023/24
431
18
23.94
34
2
2024/25
440
18
24.44
28
0
2025/26
445
19
23.42
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 277 in 1983/84 → 351, +74 pupils.
Biggest loss in a single year: 1997/98: 346 in 1996/97 → 330, -16 pupils.
Largest single-class increase: 5th Class in 2023/24 (34 → 52, +18).
Largest single-class decrease: 6th Class in 2023/24 (62 → 34, -28).
Largest cohort-step gain: 2nd → 3rd in 2021/22 (43 → 49, +6).
Largest cohort-step loss: 3rd → 4th in 2023/24 (58 → 55, -3).
Overall: 211 (1975/76) → 445 (2025/26), 234.
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
51
65
56.8
6
Senior Infants
49
68
56.8
6
1st Class
54
66
59.2
6
2nd Class
43
64
55.0
6
3rd Class
37
63
52.7
6
4th Class
34
58
50.3
6
5th Class
34
60
51.7
6
6th Class
34
62
51.3
6
Total
211
446
363.1
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).