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
22.56
2025/26
Mainstream classes
16
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
587
21
27.95
37
4
2007/08
579
22
26.32
31
3
2008/09
558
21
26.57
31
3
2009/10
547
20
27.35
37
4
2010/11
550
20
27.50
39
6
2011/12
537
20
26.85
31
4
2012/13
549
20
27.45
36
4
2013/14
576
20
28.80
37
5
2014/15
568
21
27.05
36
5
2015/16
589
22
26.77
31
5
2016/17
605
23
26.30
31
5
2017/18
611
23
26.57
31
5
2019/20
582
23
25.30
30
2
2020/21
555
23
24.13
29
0
2021/22
498
22
22.64
26
0
2022/23
488
20
24.40
30
1
2023/24
443
19
23.32
30
1
2024/25
414
18
23.00
30
1
2025/26
361
16
22.56
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 1010 in 1974/75 → 1049, +39 pupils.
Biggest loss in a single year: 1993/94: 1013 in 1982/83 → 882, -131 pupils.
Largest single-class increase: 2nd Class in 2022/23 (44 → 72, +28).
Largest single-class decrease: 2nd Class in 2021/22 (69 → 44, -25).
Largest cohort-step gain: SI → 1st in 2025/26 (44 → 49, +5).
Largest cohort-step loss: 4th → 5th in 2023/24 (69 → 63, -6).
Overall: 1010 (1974/75) → 367 (2025/26), -643.
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
20
60
42.0
6
Senior Infants
37
76
51.2
6
1st Class
45
71
53.5
6
2nd Class
42
72
56.2
6
3rd Class
42
69
57.7
6
4th Class
48
83
64.3
6
5th Class
52
78
66.0
6
6th Class
55
82
70.0
6
Total
367
1090
707.0
42
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).