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
16.50
2025/26
Mainstream classes
10
2025/26
Largest class group
20
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
238
10
23.80
31
1
2007/08
282
12
23.50
28
0
2008/09
292
12
24.33
27
0
2009/10
298
13
22.92
27
0
2010/11
292
13
22.46
25
0
2011/12
303
13
23.31
29
0
2012/13
303
13
23.31
28
0
2013/14
292
13
22.46
29
0
2014/15
259
13
19.92
23
0
2015/16
238
12
19.83
25
0
2016/17
224
12
18.67
25
0
2017/18
233
10
23.30
28
0
2019/20
217
11
19.73
27
0
2020/21
205
10
20.50
26
0
2021/22
202
10
20.20
26
0
2022/23
202
10
20.20
27
0
2023/24
195
11
17.73
21
0
2024/25
183
11
16.64
21
0
2025/26
165
10
16.50
20
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1981/82: 345 in 1980/81 → 420, +75 pupils.
Biggest loss in a single year: 1993/94: 524 in 1983/84 → 374, -150 pupils.
Largest single-class increase: 6th Class in 2024/25 (45 → 60, +15).
Largest single-class decrease: 5th Class in 2022/23 (60 → 45, -15).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (1 → 44, +43).
Largest cohort-step loss: 5th → 6th in 2021/22 (54 → 50, -4).
Overall: 292 (1979/80) → 184 (2025/26), -108.
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
2
1.0
2
Senior Infants
0
2
1.0
2
1st Class
0
1
0.5
2
2nd Class
0
1
0.5
2
3rd Class
38
57
46.5
6
4th Class
40
59
49.7
6
5th Class
45
60
53.0
6
6th Class
45
60
54.0
6
Total
184
524
281.9
38
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).