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
25.30
2025/26
Mainstream classes
10
2025/26
Largest class group
34
2025/26
Classes with 30+ pupils
3
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
248
8
31.00
37
6
2007/08
262
9
29.11
38
4
2008/09
261
10
26.10
33
1
2009/10
269
9
29.89
35
5
2010/11
264
10
26.40
32
3
2011/12
272
10
27.20
33
4
2012/13
277
10
27.70
35
3
2013/14
284
10
28.40
38
5
2014/15
290
10
29.00
37
6
2015/16
286
11
26.00
37
4
2016/17
282
11
25.64
36
2
2017/18
270
11
24.55
37
2
2019/20
259
11
23.55
30
1
2020/21
239
10
23.90
33
1
2021/22
231
10
23.10
29
0
2022/23
216
9
24.00
31
1
2023/24
237
9
26.33
34
3
2024/25
250
10
25.00
33
3
2025/26
253
10
25.30
34
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2005/06: 204 in 2004/05 → 233, +29 pupils.
Biggest loss in a single year: 2020/21: 263 in 2019/20 → 244, -19 pupils.
Largest single-class increase: 2nd Class in 2021/22 (22 → 36, +14).
Largest single-class decrease: 5th Class in 2021/22 (46 → 29, -17).
Largest cohort-step gain: 5th → 6th in 2025/26 (35 → 42, +7).
Largest cohort-step loss: 2nd → 3rd in 2025/26 (33 → 30, -3).
Overall: 192 (1998/99) → 259 (2025/26), 67.
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
23
32
26.5
6
Senior Infants
22
37
27.3
6
1st Class
23
38
30.2
6
2nd Class
22
36
28.7
6
3rd Class
22
36
27.8
6
4th Class
22
35
29.0
6
5th Class
26
46
32.8
6
6th Class
29
47
36.3
6
Total
182
290
245.3
28
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).