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
23.56
2025/26
Mainstream classes
27
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
496
17
29.18
32
7
2007/08
496
17
29.18
32
8
2008/09
515
18
28.61
32
9
2009/10
547
19
28.79
32
7
2010/11
585
20
29.25
32
11
2011/12
611
21
29.10
32
13
2012/13
615
21
29.29
32
12
2013/14
630
22
28.64
32
11
2014/15
663
24
27.62
31
7
2015/16
680
25
27.20
31
6
2016/17
670
25
26.80
30
4
2017/18
667
25
26.68
31
6
2019/20
677
26
26.04
29
0
2020/21
658
26
25.31
31
3
2021/22
664
26
25.54
31
5
2022/23
662
27
24.52
30
4
2023/24
654
27
24.22
29
0
2024/25
643
27
23.81
29
0
2025/26
636
27
23.56
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2010/11: 547 in 2009/10 → 585, +38 pupils.
Biggest loss in a single year: 2020/21: 677 in 2019/20 → 658, -19 pupils.
Largest single-class increase: 2nd Class in 2021/22 (81 → 90, +9).
Largest single-class decrease: 3rd Class in 2024/25 (84 → 75, -9).
Largest cohort-step gain: 4th → 5th in 2021/22 (80 → 85, +5).
Largest cohort-step loss: 5th → 6th in 2025/26 (83 → 71, -12).
Overall: 463 (2001/02) → 642 (2025/26), 179.
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
82
86
84.2
6
Senior Infants
81
89
84.7
6
1st Class
78
91
86.3
6
2nd Class
81
90
85.5
6
3rd Class
75
88
81.3
6
4th Class
75
84
80.3
6
5th Class
75
85
80.2
6
6th Class
70
75
72.3
6
Total
463
680
593.6
25
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).