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
17.96
2025/26
Mainstream classes
24
2025/26
Largest class group
22
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
462
23
20.09
27
0
2007/08
475
22
21.59
27
0
2008/09
463
23
20.13
24
0
2009/10
412
22
18.73
25
0
2010/11
362
20
18.10
24
0
2011/12
364
19
19.16
27
0
2012/13
372
19
19.58
23
0
2013/14
367
18
20.39
24
0
2014/15
393
17
23.12
26
0
2015/16
401
17
23.59
27
0
2016/17
407
18
22.61
30
1
2017/18
427
18
23.72
33
3
2019/20
444
20
22.20
27
0
2020/21
421
19
22.16
28
0
2021/22
410
19
21.58
28
0
2022/23
406
23
17.65
23
0
2023/24
415
24
17.29
20
0
2024/25
419
24
17.46
20
0
2025/26
431
24
17.96
22
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2018/19: 439 in 2017/18 → 470, +31 pupils.
Biggest loss in a single year: 2009/10: 501 in 2008/09 → 441, -60 pupils.
Largest single-class increase: 6th Class in 2021/22 (46 → 64, +18).
Largest single-class decrease: 4th Class in 2021/22 (64 → 47, -17).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (54 → 60, +6).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (53 → 50, -3).
Overall: 648 (1993/94) → 449 (2025/26), -199.
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
41
53
47.0
6
Senior Infants
40
54
47.3
6
1st Class
41
58
51.8
6
2nd Class
42
57
52.3
6
3rd Class
45
60
53.0
6
4th Class
46
64
55.0
6
5th Class
48
63
56.2
6
6th Class
46
65
57.5
6
Total
375
662
488.3
33
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).