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
23.35
2025/26
Mainstream classes
17
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
262
11
23.82
30
1
2007/08
281
13
21.62
30
1
2008/09
283
13
21.77
30
1
2009/10
286
13
22.00
28
0
2010/11
287
13
22.08
26
0
2011/12
282
13
21.69
28
0
2012/13
302
13
23.23
29
0
2013/14
320
13
24.62
30
1
2014/15
328
14
23.43
29
0
2015/16
354
15
23.60
31
1
2016/17
368
16
23.00
34
2
2017/18
388
17
22.82
32
1
2019/20
436
18
24.22
30
2
2020/21
421
18
23.39
28
0
2021/22
416
18
23.11
26
0
2022/23
430
18
23.89
28
0
2023/24
442
18
24.56
28
0
2024/25
416
18
23.11
28
0
2025/26
397
17
23.35
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2018/19: 388 in 2017/18 → 423, +35 pupils.
Biggest loss in a single year: 1993/94: 539 in 1982/83 → 230, -309 pupils.
Largest single-class increase: 3rd Class in 2023/24 (49 → 73, +24).
Largest single-class decrease: 5th Class in 2024/25 (71 → 47, -24).
Largest cohort-step gain: 3rd → 4th in 2022/23 (62 → 71, +9).
Largest cohort-step loss: 5th → 6th in 2024/25 (71 → 66, -5).
Overall: 718 (1975/76) → 403 (2025/26), -315.
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
38
48
43.0
6
Senior Infants
42
63
48.5
6
1st Class
42
65
50.5
6
2nd Class
47
70
55.5
6
3rd Class
49
73
57.2
6
4th Class
43
71
57.0
6
5th Class
43
71
55.8
6
6th Class
45
66
53.8
6
Total
227
718
370.2
40
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).