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
16.64
2025/26
Mainstream classes
22
2025/26
Largest class group
19
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
322
16
20.12
22
0
2007/08
360
17
21.18
22
0
2008/09
382
19
20.11
23
0
2009/10
403
20
20.15
23
0
2010/11
423
20
21.15
22
0
2011/12
422
22
19.18
20
0
2012/13
410
22
18.64
20
0
2013/14
417
21
19.86
22
0
2014/15
424
21
20.19
22
0
2015/16
419
22
19.05
22
0
2016/17
435
21
20.71
22
0
2017/18
437
21
20.81
22
0
2019/20
401
22
18.23
20
0
2020/21
373
21
17.76
20
0
2021/22
365
20
18.25
20
0
2022/23
384
21
18.29
21
0
2023/24
422
22
19.18
21
0
2024/25
405
22
18.41
21
0
2025/26
366
22
16.64
19
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1978/79: 328 in 1977/78 → 442, +114 pupils.
Biggest loss in a single year: 1982/83: 686 in 1981/82 → 343, -343 pupils.
Largest single-class increase: Junior Infants in 2023/24 (94 → 110, +16).
Largest single-class decrease: Junior Infants in 2025/26 (88 → 65, -23).
Largest cohort-step gain: JI → SI in 2023/24 (94 → 111, +17).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (111 → 0, -111).
Overall: 160 (1975/76) → 373 (2025/26), 213.
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
65
110
88.5
6
Senior Infants
89
111
97.3
6
1st Class
86
111
98.8
6
2nd Class
93
111
102.7
6
3rd Class
0
0
0.0
1
4th Class
0
0
0.0
1
5th Class
0
0
0.0
1
6th Class
0
0
0.0
1
Total
160
686
349.2
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).