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
22.54
2025/26
Mainstream classes
13
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
342
12
28.50
30
1
2007/08
343
13
26.38
30
2
2008/09
335
13
25.77
29
0
2009/10
360
13
27.69
29
0
2010/11
353
13
27.15
29
0
2011/12
359
13
27.62
29
0
2012/13
362
13
27.85
29
0
2013/14
394
14
28.14
29
0
2014/15
396
15
26.40
29
0
2015/16
398
15
26.53
28
0
2016/17
401
15
26.73
29
0
2017/18
409
15
27.27
28
0
2019/20
379
15
25.27
28
0
2020/21
377
15
25.13
28
0
2021/22
369
15
24.60
28
0
2022/23
353
15
23.53
28
0
2023/24
317
15
21.13
24
0
2024/25
307
13
23.62
27
0
2025/26
293
13
22.54
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1996/97: 338 in 1995/96 → 377, +39 pupils.
Biggest loss in a single year: 1993/94: 403 in 1982/83 → 316, -87 pupils.
Largest single-class increase: 1st Class in 2022/23 (118 → 131, +13).
Largest single-class decrease: 1st Class in 2023/24 (131 → 112, -19).
Largest cohort-step gain: JI → SI in 2021/22 (129 → 132, +3).
Largest cohort-step loss: 1st → 2nd in 2023/24 (131 → 0, -131).
Overall: 635 (1974/75) → 299 (2025/26), -336.
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
96
129
109.0
6
Senior Infants
100
132
112.5
6
1st Class
103
131
115.5
6
2nd Class
0
0
0.0
1
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
299
635
396.5
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).