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
23.38
2025/26
Mainstream classes
24
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
544
19
28.63
36
4
2007/08
572
21
27.24
31
2
2008/09
597
22
27.14
30
2
2009/10
632
23
27.48
32
4
2010/11
652
23
28.35
32
7
2011/12
681
24
28.38
33
7
2012/13
669
24
27.88
32
5
2013/14
703
24
29.29
33
10
2014/15
698
24
29.08
33
10
2015/16
702
24
29.25
33
13
2016/17
689
26
26.50
31
7
2017/18
667
25
26.68
33
9
2019/20
646
25
25.84
33
9
2020/21
637
28
22.75
26
0
2021/22
623
25
24.92
32
4
2022/23
599
25
23.96
30
2
2023/24
586
25
23.44
30
3
2024/25
588
24
24.50
31
3
2025/26
561
24
23.38
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 237 in 1983/84 → 414, +177 pupils.
Biggest loss in a single year: 2022/23: 623 in 2021/22 → 599, -24 pupils.
Largest single-class increase: Junior Infants in 2023/24 (52 → 74, +22).
Largest single-class decrease: 1st Class in 2021/22 (87 → 63, -24).
Largest cohort-step gain: JI → SI in 2021/22 (75 → 80, +5).
Largest cohort-step loss: JI → SI in 2024/25 (74 → 73, -1).
Overall: 199 (1982/83) → 567 (2025/26), 368.
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
50
75
64.0
6
Senior Infants
52
80
67.3
6
1st Class
53
87
70.7
6
2nd Class
54
88
71.3
6
3rd Class
68
89
74.8
6
4th Class
68
90
80.3
6
5th Class
69
93
83.0
6
6th Class
74
96
88.5
6
Total
199
703
539.9
35
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).