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
19.17
2025/26
Mainstream classes
12
2025/26
Largest class group
26
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
256
9
28.44
32
4
2007/08
276
10
27.60
33
2
2008/09
284
11
25.82
30
1
2009/10
281
11
25.55
29
0
2010/11
260
11
23.64
28
0
2011/12
278
10
27.80
34
5
2012/13
270
10
27.00
33
2
2013/14
271
10
27.10
32
2
2014/15
280
10
28.00
32
4
2015/16
249
10
24.90
35
4
2016/17
237
9
26.33
34
4
2017/18
238
11
21.64
26
0
2019/20
240
11
21.82
28
0
2020/21
238
11
21.64
28
0
2021/22
224
11
20.36
27
0
2022/23
219
11
19.91
26
0
2023/24
231
11
21.00
26
0
2024/25
244
12
20.33
26
0
2025/26
230
12
19.17
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 263 in 2006/07 → 290, +27 pupils.
Biggest loss in a single year: 1993/94: 345 in 1982/83 → 280, -65 pupils.
Largest single-class increase: 4th Class in 2024/25 (31 → 44, +13).
Largest single-class decrease: 4th Class in 2025/26 (44 → 26, -18).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (35 → 40, +5).
Largest cohort-step loss: 4th → 5th in 2025/26 (44 → 42, -2).
Overall: 316 (1974/75) → 230 (2025/26), -86.
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
20
29
25.3
6
Senior Infants
21
32
26.0
6
1st Class
21
33
26.3
6
2nd Class
23
35
29.0
6
3rd Class
22
40
29.7
6
4th Class
25
44
31.2
6
5th Class
24
42
31.8
6
6th Class
23
39
31.7
6
Total
219
345
270.6
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).