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
23.38
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
304
11
27.64
41
5
2007/08
343
13
26.38
39
3
2008/09
381
15
25.40
34
2
2009/10
385
14
27.50
38
4
2010/11
390
15
26.00
30
2
2011/12
408
16
25.50
29
0
2012/13
393
15
26.20
32
4
2013/14
412
15
27.47
33
4
2014/15
410
15
27.33
33
3
2015/16
399
15
26.60
35
2
2016/17
397
15
26.47
38
1
2017/18
396
15
26.40
30
1
2019/20
360
15
24.00
32
2
2020/21
338
14
24.14
29
0
2021/22
313
13
24.08
26
0
2022/23
313
13
24.08
30
1
2023/24
309
13
23.77
27
0
2024/25
304
13
23.38
30
1
2025/26
304
13
23.38
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2005/06: 233 in 2004/05 → 275, +42 pupils.
Biggest loss in a single year: 2021/22: 338 in 2020/21 → 313, -25 pupils.
Largest single-class increase: 1st Class in 2021/22 (31 → 42, +11).
Largest single-class decrease: 6th Class in 2021/22 (57 → 46, -11).
Largest cohort-step gain: SI → 1st in 2022/23 (38 → 43, +5).
Largest cohort-step loss: 3rd → 4th in 2025/26 (44 → 40, -4).
Overall: 120 (1974/75) → 304 (2025/26), 184.
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
32
38
35.2
6
Senior Infants
34
45
37.2
6
1st Class
31
43
36.8
6
2nd Class
33
45
38.7
6
3rd Class
33
44
38.5
6
4th Class
36
43
39.7
6
5th Class
38
47
42.7
6
6th Class
36
57
44.8
6
Total
120
412
250.0
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).