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
24.35
2025/26
Mainstream classes
17
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
318
12
26.50
34
4
2007/08
326
12
27.17
37
4
2008/09
324
12
27.00
34
3
2009/10
321
12
26.75
33
3
2010/11
326
12
27.17
39
4
2011/12
356
13
27.38
31
6
2012/13
381
14
27.21
31
5
2013/14
412
15
27.47
32
4
2014/15
444
16
27.75
33
3
2015/16
439
16
27.44
32
4
2016/17
438
16
27.38
32
4
2017/18
446
16
27.88
32
6
2019/20
434
17
25.53
30
2
2020/21
423
16
26.44
30
1
2021/22
429
16
26.81
29
0
2022/23
422
17
24.82
28
0
2023/24
414
17
24.35
28
0
2024/25
417
17
24.53
28
0
2025/26
414
17
24.35
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2014/15: 412 in 2013/14 → 444, +32 pupils.
Biggest loss in a single year: 1993/94: 685 in 1982/83 → 616, -69 pupils.
Largest single-class increase: Junior Infants in 2025/26 (38 → 55, +17).
Largest single-class decrease: Senior Infants in 2025/26 (52 → 37, -15).
Largest cohort-step gain: JI → SI in 2024/25 (44 → 52, +8).
Largest cohort-step loss: SI → 1st in 2025/26 (52 → 47, -5).
Overall: 651 (1975/76) → 414 (2025/26), -237.
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
55
48.2
6
Senior Infants
37
54
50.0
6
1st Class
43
55
50.5
6
2nd Class
49
56
53.3
6
3rd Class
47
56
53.8
6
4th Class
48
58
53.5
6
5th Class
51
59
54.8
6
6th Class
53
58
55.7
6
Total
290
685
470.5
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).