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
27.29
2025/26
Mainstream classes
24
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
6
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
514
18
28.56
34
5
2007/08
547
20
27.35
32
5
2008/09
589
23
25.61
31
3
2009/10
627
23
27.26
34
4
2010/11
665
24
27.71
30
3
2011/12
695
25
27.80
31
7
2012/13
705
25
28.20
30
2
2013/14
713
25
28.52
30
7
2014/15
717
25
28.68
30
6
2015/16
729
25
29.16
30
8
2016/17
738
25
29.52
31
13
2017/18
703
24
29.29
31
11
2019/20
700
24
29.17
31
11
2020/21
670
24
27.92
31
7
2021/22
667
24
27.79
31
7
2022/23
677
24
28.21
31
13
2023/24
668
24
27.83
32
12
2024/25
647
24
26.96
30
7
2025/26
655
24
27.29
30
6
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2005/06: 419 in 2004/05 → 484, +65 pupils.
Biggest loss in a single year: 1993/94: 417 in 1982/83 → 387, -30 pupils.
Largest single-class increase: Senior Infants in 2022/23 (62 → 87, +25).
Largest single-class decrease: 2nd Class in 2023/24 (88 → 66, -22).
Largest cohort-step gain: 3rd → 4th in 2022/23 (84 → 92, +8).
Largest cohort-step loss: 1st → 2nd in 2021/22 (90 → 82, -8).
Overall: 237 (1975/76) → 679 (2025/26), 442.
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
66
89
77.5
6
Senior Infants
62
87
76.7
6
1st Class
63
90
80.5
6
2nd Class
66
89
81.3
6
3rd Class
71
94
85.3
6
4th Class
78
92
87.2
6
5th Class
88
93
90.5
6
6th Class
86
92
89.0
6
Total
237
756
518.4
41
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).