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
24.11
2025/26
Mainstream classes
9
2025/26
Largest class group
33
2025/26
Classes with 30+ pupils
1
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
191
6
31.83
35
4
2007/08
202
7
28.86
36
4
2008/09
206
7
29.43
37
3
2009/10
211
7
30.14
33
5
2010/11
223
8
27.88
33
4
2011/12
216
8
27.00
32
3
2012/13
220
8
27.50
32
3
2013/14
226
8
28.25
32
5
2014/15
223
8
27.88
31
4
2015/16
228
8
28.50
32
4
2016/17
255
9
28.33
32
3
2017/18
248
10
24.80
31
2
2019/20
237
9
26.33
32
2
2020/21
242
9
26.89
34
1
2021/22
233
9
25.89
34
1
2022/23
243
9
27.00
34
1
2023/24
238
10
23.80
34
1
2024/25
217
10
21.70
28
0
2025/26
217
9
24.11
33
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 228 in 2015/16 → 255, +27 pupils.
Biggest loss in a single year: 1993/94: 236 in 1983/84 → 198, -38 pupils.
Largest single-class increase: 4th Class in 2021/22 (27 → 48, +21).
Largest single-class decrease: 3rd Class in 2021/22 (50 → 34, -16).
Largest cohort-step gain: JI → SI in 2025/26 (28 → 33, +5).
Largest cohort-step loss: JI → SI in 2023/24 (35 → 33, -2).
Overall: 155 (1974/75) → 234 (2025/26), 79.
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
21
35
29.0
6
Senior Infants
21
33
27.8
6
1st Class
21
34
26.3
6
2nd Class
21
35
27.3
6
3rd Class
20
50
30.5
6
4th Class
23
48
31.3
6
5th Class
25
48
31.8
6
6th Class
28
48
32.7
6
Total
155
255
202.2
43
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).