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
20.70
2025/26
Mainstream classes
10
2025/26
Largest class group
28
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
276
10
27.60
32
3
2007/08
296
11
26.91
31
2
2008/09
285
11
25.91
33
1
2009/10
277
11
25.18
31
1
2010/11
256
11
23.27
29
0
2011/12
247
10
24.70
32
2
2012/13
246
10
24.60
31
1
2013/14
235
10
23.50
36
1
2014/15
273
11
24.82
34
2
2015/16
279
11
25.36
31
2
2016/17
282
11
25.64
32
2
2017/18
287
11
26.09
34
1
2019/20
264
12
22.00
30
1
2020/21
250
11
22.73
30
1
2021/22
232
11
21.09
29
0
2022/23
216
10
21.60
27
0
2023/24
210
10
21.00
28
0
2024/25
226
10
22.60
28
0
2025/26
207
10
20.70
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2005/06: 222 in 2004/05 → 267, +45 pupils.
Biggest loss in a single year: 1993/94: 621 in 1982/83 → 333, -288 pupils.
Largest single-class increase: 4th Class in 2025/26 (10 → 28, +18).
Largest single-class decrease: 5th Class in 2025/26 (37 → 9, -28).
Largest cohort-step gain: SI → 1st in 2024/25 (28 → 35, +7).
Largest cohort-step loss: 1st → 2nd in 2023/24 (48 → 24, -24).
Overall: 613 (1975/76) → 236 (2025/26), -377.
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
27
47
37.0
6
Senior Infants
28
48
37.2
6
1st Class
31
48
38.2
6
2nd Class
11
25
21.0
6
3rd Class
10
27
21.0
6
4th Class
10
30
23.0
6
5th Class
9
37
24.5
6
6th Class
22
35
26.5
6
Total
211
634
336.8
41
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).