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
23.54
2025/26
Mainstream classes
13
2025/26
Largest class group
27
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
248
9
27.56
35
1
2007/08
251
9
27.89
34
4
2008/09
269
9
29.89
35
5
2009/10
279
10
27.90
34
3
2010/11
293
10
29.30
38
5
2011/12
296
11
26.91
36
3
2012/13
309
11
28.09
33
5
2013/14
319
11
29.00
32
5
2014/15
325
12
27.08
33
2
2015/16
341
12
28.42
34
4
2016/17
338
13
26.00
32
3
2017/18
334
13
25.69
32
4
2019/20
335
13
25.77
31
2
2020/21
340
13
26.15
32
6
2021/22
333
14
23.79
31
1
2022/23
345
13
26.54
30
3
2023/24
326
14
23.29
31
2
2024/25
310
14
22.14
27
0
2025/26
306
13
23.54
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2003/04: 171 in 2002/03 → 197, +26 pupils.
Biggest loss in a single year: 2023/24: 345 in 2022/23 → 329, -16 pupils.
Largest single-class increase: Junior Infants in 2022/23 (33 → 60, +27).
Largest single-class decrease: Junior Infants in 2023/24 (60 → 27, -33).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (36 → 39, +3).
Largest cohort-step loss: SI → 1st in 2021/22 (39 → 37, -2).
Overall: 132 (1975/76) → 318 (2025/26), 186.
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
27
60
37.3
6
Senior Infants
27
60
38.8
6
1st Class
30
59
40.0
6
2nd Class
36
60
41.7
6
3rd Class
35
50
40.5
6
4th Class
34
50
41.5
6
5th Class
35
52
43.8
6
6th Class
35
53
45.0
6
Total
129
345
227.4
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).