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
23.31
2025/26
Mainstream classes
16
2025/26
Largest class group
26
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
402
15
26.80
30
1
2007/08
406
15
27.07
31
3
2008/09
416
15
27.73
33
3
2009/10
423
15
28.20
33
3
2010/11
412
16
25.75
29
0
2011/12
400
16
25.00
29
0
2012/13
400
15
26.67
31
4
2013/14
387
15
25.80
31
3
2014/15
387
14
27.64
32
6
2015/16
391
14
27.93
32
6
2016/17
399
15
26.60
32
3
2017/18
412
15
27.47
32
3
2019/20
431
16
26.94
29
0
2020/21
432
16
27.00
29
0
2021/22
432
16
27.00
30
1
2022/23
410
16
25.62
30
1
2023/24
394
17
23.18
27
0
2024/25
385
16
24.06
28
0
2025/26
373
16
23.31
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 337 in 1983/84 → 474, +137 pupils.
Biggest loss in a single year: 2011/12: 423 in 2010/11 → 400, -23 pupils.
Largest single-class increase: 4th Class in 2021/22 (100 → 114, +14).
Largest single-class decrease: 3rd Class in 2022/23 (109 → 92, -17).
Largest cohort-step gain: 4th → 5th in 2024/25 (91 → 94, +3).
Largest cohort-step loss: 3rd → 4th in 2022/23 (109 → 105, -4).
Overall: 80 (1977/78) → 377 (2025/26), 297.
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
0
0
0.0
1
Senior Infants
0
0
0.0
1
1st Class
0
0
0.0
1
2nd Class
0
0
0.0
1
3rd Class
85
113
99.2
6
4th Class
88
114
99.3
6
5th Class
88
114
102.3
6
6th Class
91
113
104.2
6
Total
80
474
386.3
40
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).