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
24.75
2025/26
Mainstream classes
24
2025/26
Largest class group
28
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
216
8
27.00
29
0
2007/08
304
12
25.33
30
1
2008/09
381
14
27.21
30
4
2009/10
462
16
28.88
32
6
2010/11
514
19
27.05
31
5
2011/12
574
21
27.33
31
4
2012/13
650
24
27.08
30
10
2013/14
677
25
27.08
31
9
2014/15
670
25
26.80
30
8
2015/16
690
24
28.75
30
6
2016/17
665
24
27.71
30
1
2017/18
658
24
27.42
30
2
2019/20
646
24
26.92
31
1
2020/21
646
24
26.92
28
0
2021/22
631
24
26.29
28
0
2022/23
628
24
26.17
28
0
2023/24
618
24
25.75
27
0
2024/25
610
24
25.42
27
0
2025/26
594
24
24.75
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 52 in 2005/06 → 219, +167 pupils.
Biggest loss in a single year: 2016/17: 708 in 2015/16 → 679, -29 pupils.
Largest single-class increase: Senior Infants in 2022/23 (74 → 80, +6).
Largest single-class decrease: Senior Infants in 2021/22 (84 → 74, -10).
Largest cohort-step gain: SI → 1st in 2022/23 (74 → 78, +4).
Largest cohort-step loss: JI → SI in 2021/22 (78 → 74, -4).
Overall: 52 (2005/06) → 612 (2025/26), 560.
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
72
82
77.8
6
Senior Infants
74
84
78.2
6
1st Class
73
82
78.0
6
2nd Class
76
81
78.7
6
3rd Class
76
81
79.2
6
4th Class
76
79
77.3
6
5th Class
74
84
78.0
6
6th Class
75
84
79.3
6
Total
52
708
563.7
21
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).