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
22.92
2025/26
Mainstream classes
13
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
229
8
28.62
34
3
2007/08
220
8
27.50
30
2
2008/09
234
8
29.25
32
4
2009/10
243
8
30.38
33
7
2010/11
268
9
29.78
35
6
2011/12
272
10
27.20
34
4
2012/13
282
10
28.20
37
4
2013/14
294
10
29.40
37
6
2014/15
311
12
25.92
31
1
2015/16
318
12
26.50
36
2
2016/17
323
12
26.92
34
3
2017/18
340
13
26.15
37
2
2019/20
321
13
24.69
32
4
2020/21
324
16
20.25
29
0
2021/22
319
15
21.27
30
2
2022/23
311
13
23.92
27
0
2023/24
299
13
23.00
26
0
2024/25
294
13
22.62
26
0
2025/26
298
13
22.92
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2003/04: 198 in 2002/03 → 225, +27 pupils.
Biggest loss in a single year: 2018/19: 351 in 2017/18 → 336, -15 pupils.
Largest single-class increase: Junior Infants in 2022/23 (23 → 40, +17).
Largest single-class decrease: 5th Class in 2024/25 (46 → 34, -12).
Largest cohort-step gain: SI → 1st in 2021/22 (35 → 42, +7).
Largest cohort-step loss: JI → SI in 2023/24 (40 → 36, -4).
Overall: 101 (1974/75) → 310 (2025/26), 209.
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
42
34.7
6
Senior Infants
26
43
34.7
6
1st Class
29
42
35.0
6
2nd Class
30
42
36.7
6
3rd Class
29
45
38.0
6
4th Class
36
45
41.2
6
5th Class
34
50
44.2
6
6th Class
36
53
45.5
6
Total
101
351
233.2
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).