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
24.29
2025/26
Mainstream classes
21
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
2
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
269
10
26.90
33
3
2007/08
279
10
27.90
34
3
2008/09
284
11
25.82
28
0
2009/10
266
10
26.60
33
4
2010/11
253
10
25.30
30
1
2011/12
267
9
29.67
36
5
2012/13
264
10
26.40
34
3
2013/14
267
10
26.70
31
3
2014/15
342
13
26.31
34
2
2015/16
371
14
26.50
32
3
2016/17
397
15
26.47
33
5
2017/18
424
16
26.50
33
4
2019/20
503
19
26.47
32
5
2020/21
526
20
26.30
33
6
2021/22
530
20
26.50
34
6
2022/23
528
21
25.14
33
5
2023/24
522
22
23.73
34
3
2024/25
508
21
24.19
32
2
2025/26
510
21
24.29
31
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2014/15: 267 in 2013/14 → 342, +75 pupils.
Biggest loss in a single year: 1993/94: 291 in 1983/84 → 246, -45 pupils.
Largest single-class increase: 3rd Class in 2022/23 (58 → 80, +22).
Largest single-class decrease: 2nd Class in 2023/24 (80 → 58, -22).
Largest cohort-step gain: JI → SI in 2025/26 (45 → 51, +6).
Largest cohort-step loss: 1st → 2nd in 2021/22 (85 → 79, -6).
Overall: 237 (1974/75) → 522 (2025/26), 285.
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
45
65
59.7
6
Senior Infants
51
75
61.0
6
1st Class
57
85
67.7
6
2nd Class
58
80
66.0
6
3rd Class
58
80
67.5
6
4th Class
59
82
67.7
6
5th Class
58
82
68.2
6
6th Class
56
81
65.0
6
Total
237
530
323.1
43
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).