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
23.14
2025/26
Mainstream classes
14
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
1
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
277
10
27.70
34
4
2007/08
282
11
25.64
33
3
2008/09
294
11
26.73
34
2
2009/10
285
11
25.91
33
3
2010/11
266
11
24.18
34
2
2011/12
284
11
25.82
35
5
2012/13
272
10
27.20
35
6
2013/14
270
10
27.00
35
3
2014/15
267
10
26.70
35
4
2015/16
262
10
26.20
35
3
2016/17
255
10
25.50
36
4
2017/18
247
10
24.70
32
3
2019/20
272
11
24.73
33
2
2020/21
275
11
25.00
34
1
2021/22
273
13
21.00
30
1
2022/23
300
12
25.00
32
1
2023/24
312
13
24.00
31
1
2024/25
322
13
24.77
31
3
2025/26
324
14
23.14
31
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2022/23: 284 in 2021/22 → 312, +28 pupils.
Biggest loss in a single year: 2010/11: 305 in 2009/10 → 287, -18 pupils.
Largest single-class increase: 5th Class in 2024/25 (29 → 56, +27).
Largest single-class decrease: 6th Class in 2021/22 (40 → 24, -16).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (37 → 42, +5).
Largest cohort-step loss: 5th → 6th in 2025/26 (56 → 53, -3).
Overall: 138 (1974/75) → 336 (2025/26), 198.
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
29
50
37.5
6
Senior Infants
30
48
39.3
6
1st Class
33
45
39.7
6
2nd Class
26
47
37.2
6
3rd Class
26
49
38.8
6
4th Class
27
52
38.7
6
5th Class
22
56
38.5
6
6th Class
24
53
38.3
6
Total
136
336
252.0
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).