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
20.00
2025/26
Mainstream classes
14
2025/26
Largest class group
23
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
258
12
21.50
28
0
2007/08
271
12
22.58
28
0
2008/09
250
12
20.83
26
0
2009/10
245
11
22.27
26
0
2010/11
281
12
23.42
27
0
2011/12
296
13
22.77
27
0
2012/13
321
13
24.69
28
0
2013/14
319
14
22.79
28
0
2014/15
320
14
22.86
27
0
2015/16
323
14
23.07
28
0
2016/17
306
14
21.86
28
0
2017/18
313
13
24.08
29
0
2019/20
295
13
22.69
28
0
2020/21
299
13
23.00
27
0
2021/22
289
13
22.23
26
0
2022/23
309
13
23.77
27
0
2023/24
307
14
21.93
25
0
2024/25
282
14
20.14
27
0
2025/26
280
14
20.00
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1983/84: 340 in 1982/83 → 433, +93 pupils.
Biggest loss in a single year: 1997/98: 416 in 1996/97 → 365, -51 pupils.
Largest single-class increase: 6th Class in 2022/23 (61 → 76, +15).
Largest single-class decrease: 4th Class in 2025/26 (78 → 58, -20).
Largest cohort-step gain: 4th → 5th in 2022/23 (75 → 80, +5).
Largest cohort-step loss: 4th → 5th in 2021/22 (81 → 77, -4).
Overall: 80 (1977/78) → 286 (2025/26), 206.
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
57
79
71.5
6
4th Class
58
82
74.7
6
5th Class
64
81
76.0
6
6th Class
61
80
74.7
6
Total
80
497
306.5
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).