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
24.83
2025/26
Mainstream classes
12
2025/26
Largest class group
38
2025/26
Classes with 30+ pupils
3
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
275
10
27.50
35
5
2007/08
271
10
27.10
36
4
2008/09
270
10
27.00
34
4
2009/10
282
10
28.20
34
4
2010/11
272
11
24.73
34
4
2011/12
286
10
28.60
37
5
2012/13
288
11
26.18
35
4
2013/14
272
11
24.73
34
4
2014/15
309
12
25.75
35
4
2015/16
313
12
26.08
36
4
2016/17
327
13
25.15
35
3
2017/18
341
13
26.23
36
3
2019/20
353
14
25.21
35
1
2020/21
351
15
23.40
30
3
2021/22
324
14
23.14
30
3
2022/23
308
13
23.69
33
2
2023/24
312
13
24.00
32
4
2024/25
291
13
22.38
34
2
2025/26
298
12
24.83
38
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2014/15: 272 in 2013/14 → 309, +37 pupils.
Biggest loss in a single year: 1993/94: 656 in 1983/84 → 519, -137 pupils.
Largest single-class increase: Junior Infants in 2025/26 (14 → 31, +17).
Largest single-class decrease: 5th Class in 2021/22 (60 → 30, -30).
Largest cohort-step gain: 3rd → 4th in 2025/26 (35 → 43, +8).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (47 → 43, -4).
Overall: 762 (1974/75) → 304 (2025/26), -458.
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
14
37
28.8
6
Senior Infants
17
37
29.8
6
1st Class
28
53
36.5
6
2nd Class
33
52
41.3
6
3rd Class
32
57
40.5
6
4th Class
30
60
42.5
6
5th Class
30
60
45.5
6
6th Class
32
65
50.0
6
Total
260
776
418.4
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).