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
15.91
2025/26
Mainstream classes
11
2025/26
Largest class group
24
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
245
9
27.22
31
2
2007/08
250
9
27.78
32
3
2008/09
270
10
27.00
31
4
2009/10
264
10
26.40
30
2
2010/11
237
10
23.70
29
0
2011/12
261
9
29.00
31
5
2012/13
257
10
25.70
31
2
2013/14
266
10
26.60
33
3
2014/15
264
10
26.40
32
3
2015/16
272
11
24.73
32
2
2016/17
271
11
24.64
30
2
2017/18
260
13
20.00
25
0
2019/20
240
12
20.00
23
0
2020/21
238
13
18.31
25
0
2021/22
225
12
18.75
23
0
2022/23
217
12
18.08
23
0
2023/24
207
11
18.82
24
0
2024/25
191
10
19.10
25
0
2025/26
175
11
15.91
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1978/79: 303 in 1977/78 → 335, +32 pupils.
Biggest loss in a single year: 2010/11: 277 in 2009/10 → 249, -28 pupils.
Largest single-class increase: 5th Class in 2021/22 (28 → 35, +7).
Largest single-class decrease: 2nd Class in 2022/23 (31 → 20, -11).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (20 → 24, +4).
Largest cohort-step loss: SI → 1st in 2021/22 (25 → 22, -3).
Overall: 275 (1974/75) → 187 (2025/26), -88.
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
19
24
20.7
6
Senior Infants
18
25
21.5
6
1st Class
19
28
22.8
6
2nd Class
20
35
25.8
6
3rd Class
20
38
28.3
6
4th Class
26
36
31.3
6
5th Class
26
35
30.7
6
6th Class
29
36
32.0
6
Total
187
335
271.5
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).