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
17.57
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
265
11
24.09
32
2
2007/08
261
12
21.75
31
2
2008/09
281
13
21.62
28
0
2009/10
280
10
28.00
35
3
2010/11
262
10
26.20
33
1
2011/12
265
10
26.50
34
3
2012/13
276
11
25.09
33
2
2013/14
288
12
24.00
31
1
2014/15
290
12
24.17
31
1
2015/16
278
12
23.17
35
2
2016/17
266
12
22.17
34
1
2017/18
271
13
20.85
26
0
2019/20
255
12
21.25
34
1
2020/21
268
12
22.33
30
1
2021/22
264
12
22.00
29
0
2022/23
256
13
19.69
24
0
2023/24
280
13
21.54
30
1
2024/25
272
14
19.43
25
0
2025/26
246
14
17.57
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2023/24: 256 in 2022/23 → 280, +24 pupils.
Biggest loss in a single year: 1993/94: 449 in 1982/83 → 390, -59 pupils.
Largest single-class increase: Senior Infants in 2021/22 (21 → 49, +28).
Largest single-class decrease: 3rd Class in 2025/26 (48 → 29, -19).
Largest cohort-step gain: 5th → 6th in 2023/24 (24 → 30, +6).
Largest cohort-step loss: 2nd → 3rd in 2025/26 (36 → 29, -7).
Overall: 568 (1975/76) → 252 (2025/26), -316.
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
48
34.2
6
Senior Infants
21
49
31.3
6
1st Class
22
46
33.3
6
2nd Class
22
48
35.3
6
3rd Class
24
48
34.5
6
4th Class
23
45
32.7
6
5th Class
22
38
29.8
6
6th Class
27
40
34.2
6
Total
250
572
323.1
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).