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
18.30
2025/26
Mainstream classes
30
2025/26
Largest class group
21
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
443
21
21.10
24
0
2007/08
488
23
21.22
26
0
2008/09
504
24
21.00
26
0
2009/10
507
24
21.12
25
0
2010/11
533
24
22.21
26
0
2011/12
532
24
22.17
25
0
2012/13
544
24
22.67
25
0
2013/14
545
25
21.80
25
0
2014/15
561
25
22.44
29
0
2015/16
593
26
22.81
25
0
2016/17
594
26
22.85
25
0
2017/18
592
26
22.77
26
0
2019/20
580
26
22.31
26
0
2020/21
565
26
21.73
25
0
2021/22
541
26
20.81
25
0
2022/23
555
27
20.56
26
0
2023/24
573
26
22.04
27
0
2024/25
588
31
18.97
21
0
2025/26
549
30
18.30
21
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 247 in 1983/84 → 459, +212 pupils.
Biggest loss in a single year: 1995/96: 414 in 1994/95 → 358, -56 pupils.
Largest single-class increase: 1st Class in 2023/24 (56 → 78, +22).
Largest single-class decrease: 6th Class in 2021/22 (95 → 70, -25).
Largest cohort-step gain: 1st → 2nd in 2023/24 (56 → 68, +12).
Largest cohort-step loss: 3rd → 4th in 2025/26 (74 → 70, -4).
Overall: 247 (1983/84) → 573 (2025/26), 326.
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
54
70
62.0
6
Senior Infants
56
72
64.0
6
1st Class
56
78
66.2
6
2nd Class
64
84
71.5
6
3rd Class
67
85
72.8
6
4th Class
70
82
73.5
6
5th Class
70
83
76.2
6
6th Class
69
95
79.7
6
Total
247
612
480.0
34
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).