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
24.60
2025/26
Mainstream classes
10
2025/26
Largest class group
33
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+
2006/07
267
10
26.70
32
3
2007/08
292
11
26.55
31
3
2008/09
281
11
25.55
32
1
2009/10
280
11
25.45
32
2
2010/11
276
11
25.09
32
1
2011/12
293
11
26.64
33
2
2012/13
295
11
26.82
31
3
2013/14
297
11
27.00
31
2
2014/15
295
11
26.82
30
2
2015/16
306
11
27.82
31
2
2016/17
300
12
25.00
31
2
2017/18
309
12
25.75
31
3
2019/20
272
11
24.73
29
0
2020/21
258
10
25.80
35
3
2021/22
236
10
23.60
34
2
2022/23
235
10
23.50
33
1
2023/24
244
10
24.40
30
1
2024/25
244
10
24.40
32
2
2025/26
246
10
24.60
33
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 276 in 1983/84 → 323, +47 pupils.
Biggest loss in a single year: 1978/79: 390 in 1977/78 → 334, -56 pupils.
Largest single-class increase: 4th Class in 2022/23 (20 → 33, +13).
Largest single-class decrease: 1st Class in 2021/22 (56 → 36, -20).
Largest cohort-step gain: JI → SI in 2025/26 (49 → 57, +8).
Largest cohort-step loss: 1st → 2nd in 2021/22 (56 → 23, -33).
Overall: 386 (1974/75) → 252 (2025/26), -134.
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
36
49
42.8
6
Senior Infants
34
57
43.7
6
1st Class
35
56
43.0
6
2nd Class
17
33
22.0
6
3rd Class
15
33
22.3
6
4th Class
14
33
21.3
6
5th Class
17
32
23.8
6
6th Class
20
32
25.8
6
Total
235
404
294.8
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).