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
23.42
2025/26
Mainstream classes
19
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
1
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
196
8
24.50
28
0
2007/08
204
8
25.50
34
1
2008/09
230
9
25.56
35
1
2009/10
234
9
26.00
34
2
2010/11
243
9
27.00
34
3
2011/12
279
10
27.90
34
4
2012/13
301
11
27.36
35
5
2013/14
347
12
28.92
38
6
2014/15
375
14
26.79
39
4
2015/16
403
16
25.19
37
5
2016/17
431
16
26.94
38
6
2017/18
462
17
27.18
36
5
2019/20
471
17
27.71
34
6
2020/21
481
17
28.29
34
8
2021/22
472
18
26.22
34
6
2022/23
465
19
24.47
33
2
2023/24
476
19
25.05
33
4
2024/25
467
19
24.58
37
3
2025/26
445
19
23.42
31
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2013/14: 301 in 2012/13 → 347, +46 pupils.
Biggest loss in a single year: 2025/26: 471 in 2024/25 → 451, -20 pupils.
Largest single-class increase: 1st Class in 2021/22 (48 → 64, +16).
Largest single-class decrease: 4th Class in 2023/24 (72 → 49, -23).
Largest cohort-step gain: JI → SI in 2024/25 (62 → 65, +3).
Largest cohort-step loss: SI → 1st in 2022/23 (60 → 56, -4).
Overall: 185 (1993/94) → 451 (2025/26), 266.
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
56
63
59.0
6
Senior Infants
56
65
60.0
6
1st Class
48
64
57.8
6
2nd Class
49
71
58.5
6
3rd Class
49
71
59.2
6
4th Class
49
72
59.2
6
5th Class
49
71
57.3
6
6th Class
48
70
58.3
6
Total
173
481
303.5
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).