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
22.31
2025/26
Mainstream classes
13
2025/26
Largest class group
29
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
266
10
26.60
34
6
2007/08
261
10
26.10
35
5
2008/09
263
10
26.30
36
4
2009/10
271
10
27.10
34
3
2010/11
269
10
26.90
35
2
2011/12
276
10
27.60
35
4
2012/13
287
10
28.70
36
3
2013/14
287
11
26.09
36
3
2014/15
297
11
27.00
37
4
2015/16
304
11
27.64
38
1
2016/17
309
11
28.09
30
4
2017/18
307
12
25.58
30
3
2019/20
291
12
24.25
31
2
2020/21
288
11
26.18
32
2
2021/22
295
11
26.82
28
0
2022/23
300
12
25.00
29
0
2023/24
308
12
25.67
29
0
2024/25
303
13
23.31
29
0
2025/26
290
13
22.31
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 157 in 1983/84 → 200, +43 pupils.
Biggest loss in a single year: 1979/80: 174 in 1978/79 → 151, -23 pupils.
Largest single-class increase: 2nd Class in 2022/23 (30 → 37, +7).
Largest single-class decrease: 3rd Class in 2022/23 (39 → 31, -8).
Largest cohort-step gain: 3rd → 4th in 2025/26 (43 → 45, +2).
Largest cohort-step loss: 4th → 5th in 2025/26 (39 → 38, -1).
Overall: 155 (1974/75) → 296 (2025/26), 141.
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
26
40
34.7
6
Senior Infants
31
41
36.8
6
1st Class
30
42
37.5
6
2nd Class
30
44
38.8
6
3rd Class
31
44
38.7
6
4th Class
32
45
37.5
6
5th Class
33
40
37.0
6
6th Class
34
40
37.3
6
Total
144
309
244.3
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).