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
19.87
2025/26
Mainstream classes
23
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
1
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
478
17
28.12
31
8
2007/08
472
18
26.22
32
5
2008/09
507
18
28.17
34
10
2009/10
506
18
28.11
34
10
2010/11
490
18
27.22
34
10
2011/12
473
18
26.28
34
9
2012/13
477
17
28.06
34
11
2013/14
474
17
27.88
34
8
2014/15
471
19
24.79
32
6
2015/16
459
19
24.16
31
3
2016/17
445
19
23.42
30
2
2017/18
446
18
24.78
31
2
2019/20
514
21
24.48
30
2
2020/21
487
21
23.19
27
0
2021/22
474
20
23.70
27
0
2022/23
533
20
26.65
33
4
2023/24
507
23
22.04
29
0
2024/25
499
23
21.70
29
0
2025/26
457
23
19.87
31
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2022/23: 486 in 2021/22 → 551, +65 pupils.
Biggest loss in a single year: 2025/26: 528 in 2024/25 → 487, -41 pupils.
Largest single-class increase: 3rd Class in 2022/23 (52 → 77, +25).
Largest single-class decrease: Senior Infants in 2021/22 (76 → 52, -24).
Largest cohort-step gain: 3rd → 4th in 2022/23 (52 → 64, +12).
Largest cohort-step loss: 3rd → 4th in 2023/24 (77 → 72, -5).
Overall: 495 (1995/96) → 487 (2025/26), -8.
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
67
54.3
6
Senior Infants
50
76
59.0
6
1st Class
54
77
63.0
6
2nd Class
54
84
64.0
6
3rd Class
46
84
62.5
6
4th Class
47
84
66.3
6
5th Class
55
81
66.3
6
6th Class
57
69
62.3
6
Total
449
551
486.5
31
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).