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
22.36
2025/26
Mainstream classes
14
2025/26
Largest class group
28
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
281
12
23.42
29
0
2007/08
269
11
24.45
31
1
2008/09
275
11
25.00
31
3
2009/10
262
11
23.82
39
2
2010/11
287
10
28.70
35
6
2011/12
281
11
25.55
33
3
2012/13
272
10
27.20
36
5
2013/14
293
11
26.64
36
3
2014/15
306
11
27.82
35
4
2015/16
329
13
25.31
31
2
2016/17
320
13
24.62
29
0
2017/18
349
14
24.93
28
0
2019/20
370
15
24.67
28
0
2020/21
357
15
23.80
27
0
2021/22
353
15
23.53
26
0
2022/23
366
15
24.40
29
0
2023/24
351
16
21.94
29
0
2024/25
323
15
21.53
28
0
2025/26
313
14
22.36
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 250 in 1974/75 → 360, +110 pupils.
Biggest loss in a single year: 1993/94: 519 in 1983/84 → 457, -62 pupils.
Largest single-class increase: Senior Infants in 2022/23 (21 → 51, +30).
Largest single-class decrease: Senior Infants in 2021/22 (48 → 21, -27).
Largest cohort-step gain: 1st → 2nd in 2025/26 (42 → 50, +8).
Largest cohort-step loss: SI → 1st in 2024/25 (45 → 42, -3).
Overall: 250 (1974/75) → 331 (2025/26), 81.
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
20
47
34.2
6
Senior Infants
21
51
38.2
6
1st Class
22
52
41.8
6
2nd Class
22
51
43.8
6
3rd Class
23
55
45.2
6
4th Class
24
55
45.0
6
5th Class
44
55
49.7
6
6th Class
46
54
49.5
6
Total
250
519
361.4
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).