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
23.71
2025/26
Mainstream classes
14
2025/26
Largest class group
29
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
268
10
26.80
33
3
2007/08
286
10
28.60
33
3
2008/09
313
11
28.45
34
6
2009/10
316
11
28.73
34
4
2010/11
317
12
26.42
30
4
2011/12
324
12
27.00
31
5
2012/13
335
12
27.92
33
4
2013/14
347
12
28.92
33
8
2014/15
347
13
26.69
33
4
2015/16
358
13
27.54
34
6
2016/17
348
13
26.77
32
5
2017/18
335
13
25.77
33
5
2019/20
365
14
26.07
32
5
2020/21
351
15
23.40
29
0
2021/22
341
15
22.73
31
2
2022/23
336
15
22.40
32
3
2023/24
339
14
24.21
30
1
2024/25
325
14
23.21
28
0
2025/26
332
14
23.71
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 220 in 2005/06 → 268, +48 pupils.
Biggest loss in a single year: 1993/94: 290 in 1983/84 → 196, -94 pupils.
Largest single-class increase: Junior Infants in 2023/24 (41 → 51, +10).
Largest single-class decrease: Junior Infants in 2024/25 (51 → 34, -17).
Largest cohort-step gain: 1st → 2nd in 2022/23 (41 → 46, +5).
Largest cohort-step loss: JI → SI in 2021/22 (45 → 41, -4).
Overall: 284 (1981/82) → 344 (2025/26), 60.
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
34
51
42.7
6
Senior Infants
33
50
42.2
6
1st Class
41
52
44.7
6
2nd Class
39
46
43.0
6
3rd Class
39
48
43.7
6
4th Class
39
49
43.5
6
5th Class
37
48
43.0
6
6th Class
36
49
42.7
6
Total
185
365
284.1
36
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).