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
23.24
2025/26
Mainstream classes
17
2025/26
Largest class group
27
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
561
20
28.05
31
6
2007/08
552
20
27.60
29
0
2008/09
529
20
26.45
29
0
2009/10
515
20
25.75
30
1
2010/11
468
19
24.63
27
0
2011/12
450
17
26.47
29
0
2012/13
415
16
25.94
30
3
2013/14
412
15
27.47
31
2
2014/15
396
16
24.75
28
0
2015/16
406
16
25.38
31
1
2016/17
415
16
25.94
30
5
2017/18
405
16
25.31
30
2
2019/20
456
17
26.82
29
0
2020/21
464
17
27.29
30
1
2021/22
463
17
27.24
30
1
2022/23
467
17
27.47
29
0
2023/24
423
17
24.88
28
0
2024/25
424
17
24.94
27
0
2025/26
395
17
23.24
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1981/82: 229 in 1980/81 → 314, +85 pupils.
Biggest loss in a single year: 2023/24: 473 in 2022/23 → 429, -44 pupils.
Largest single-class increase: 6th Class in 2022/23 (54 → 82, +28).
Largest single-class decrease: 6th Class in 2023/24 (82 → 57, -25).
Largest cohort-step gain: 4th → 5th in 2021/22 (76 → 81, +5).
Largest cohort-step loss: JI → SI in 2025/26 (50 → 45, -5).
Overall: 229 (1980/81) → 401 (2025/26), 172.
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
47
54
50.8
6
Senior Infants
45
57
52.5
6
1st Class
48
59
53.8
6
2nd Class
51
58
54.5
6
3rd Class
50
58
54.3
6
4th Class
50
76
57.0
6
5th Class
52
81
59.0
6
6th Class
50
82
58.5
6
Total
229
606
478.2
37
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).