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
25.94
2025/26
Mainstream classes
16
2025/26
Largest class group
29
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
269
10
26.90
34
4
2007/08
271
11
24.64
33
3
2008/09
268
11
24.36
33
2
2009/10
254
11
23.09
36
1
2010/11
248
10
24.80
33
3
2011/12
263
10
26.30
30
2
2012/13
280
10
28.00
37
5
2013/14
290
10
29.00
37
5
2014/15
297
11
27.00
38
4
2015/16
280
11
25.45
34
3
2016/17
289
11
26.27
35
3
2017/18
315
12
26.25
37
2
2019/20
345
13
26.54
38
2
2020/21
352
14
25.14
38
1
2021/22
370
15
24.67
29
0
2022/23
375
15
25.00
28
0
2023/24
403
16
25.19
29
0
2024/25
414
16
25.88
29
0
2025/26
415
16
25.94
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 161 in 1983/84 → 262, +101 pupils.
Biggest loss in a single year: 2009/10: 298 in 2008/09 → 274, -24 pupils.
Largest single-class increase: 5th Class in 2022/23 (24 → 45, +21).
Largest single-class decrease: 6th Class in 2022/23 (50 → 23, -27).
Largest cohort-step gain: JI → SI in 2021/22 (44 → 45, +1).
Largest cohort-step loss: 2nd → 3rd in 2025/26 (55 → 54, -1).
Overall: 29 (1978/79) → 415 (2025/26), 386.
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
44
56
51.7
6
Senior Infants
45
57
52.8
6
1st Class
45
56
51.3
6
2nd Class
46
57
51.5
6
3rd Class
44
54
49.3
6
4th Class
25
51
44.5
6
5th Class
24
50
44.5
6
6th Class
23
50
42.5
6
Total
29
415
280.1
39
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).