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
24.11
2025/26
Mainstream classes
18
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
494
18
27.44
32
7
2007/08
490
18
27.22
32
7
2008/09
488
18
27.11
33
6
2009/10
471
18
26.17
31
8
2010/11
477
17
28.06
32
11
2011/12
481
17
28.29
33
10
2012/13
477
17
28.06
33
10
2013/14
478
17
28.12
32
8
2014/15
480
17
28.24
32
10
2015/16
511
18
28.39
33
9
2016/17
513
19
27.00
33
9
2017/18
508
19
26.74
32
8
2019/20
490
19
25.79
32
6
2020/21
491
19
25.84
32
5
2021/22
477
19
25.11
32
3
2022/23
470
19
24.74
31
3
2023/24
444
19
23.37
30
1
2024/25
434
18
24.11
28
0
2025/26
434
18
24.11
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2015/16: 480 in 2014/15 → 511, +31 pupils.
Biggest loss in a single year: 2023/24: 470 in 2022/23 → 444, -26 pupils.
Largest single-class increase: 5th Class in 2021/22 (53 → 77, +24).
Largest single-class decrease: 4th Class in 2021/22 (82 → 62, -20).
Largest cohort-step gain: SI → 1st in 2025/26 (64 → 68, +4).
Largest cohort-step loss: JI → SI in 2022/23 (56 → 50, -6).
Overall: 526 (1993/94) → 440 (2025/26), -86.
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
49
64
57.3
6
Senior Infants
50
64
58.0
6
1st Class
51
68
57.3
6
2nd Class
53
61
55.7
6
3rd Class
53
62
56.5
6
4th Class
50
82
60.0
6
5th Class
48
77
57.8
6
6th Class
45
75
56.7
6
Total
438
550
497.5
33
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).