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
24.57
2025/26
Mainstream classes
14
2025/26
Largest class group
32
2025/26
Classes with 30+ pupils
2
2025/26
Class group metrics trend
Class group metrics by year
Year
Mainstream class pupils
Mainstream classes
Average class size
Largest class
Classes 30+
2007/08
228
10
22.80
30
1
2008/09
237
10
23.70
31
1
2009/10
230
10
23.00
35
3
2010/11
242
10
24.20
31
3
2011/12
242
10
24.20
30
1
2012/13
260
10
26.00
33
5
2013/14
255
10
25.50
37
2
2014/15
257
10
25.70
34
2
2015/16
272
10
27.20
36
3
2016/17
303
12
25.25
35
1
2017/18
325
13
25.00
35
2
2019/20
341
14
24.36
38
2
2020/21
318
14
22.71
38
2
2021/22
322
14
23.00
35
2
2022/23
343
14
24.50
32
1
2023/24
332
14
23.71
30
2
2024/25
342
14
24.43
34
2
2025/26
344
14
24.57
32
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 295 in 2015/16 → 327, +32 pupils.
Biggest loss in a single year: 2020/21: 365 in 2019/20 → 342, -23 pupils.
Largest single-class increase: 3rd Class in 2025/26 (34 → 50, +16).
Largest single-class decrease: 4th Class in 2024/25 (48 → 30, -18).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (41 → 50, +9).
Largest cohort-step loss: 1st → 2nd in 2022/23 (32 → 29, -3).
Overall: 243 (2007/08) → 368 (2025/26), 125.
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
31
48
40.5
6
Senior Infants
31
46
39.7
6
1st Class
32
50
41.2
6
2nd Class
29
51
40.5
6
3rd Class
30
51
43.2
6
4th Class
30
52
41.7
6
5th Class
33
55
43.7
6
6th Class
35
58
47.2
6
Total
243
368
311.3
19
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).