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
26.88
2025/26
Mainstream classes
16
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
455
16
28.44
31
6
2007/08
452
16
28.25
31
4
2008/09
449
16
28.06
32
4
2009/10
444
16
27.75
32
3
2010/11
443
16
27.69
31
3
2011/12
449
16
28.06
31
5
2012/13
447
16
27.94
31
7
2013/14
444
16
27.75
31
9
2014/15
453
16
28.31
31
8
2015/16
456
16
28.50
31
9
2016/17
459
16
28.69
30
7
2017/18
452
16
28.25
30
2
2019/20
444
16
27.75
29
0
2020/21
432
16
27.00
29
0
2021/22
428
16
26.75
29
0
2022/23
425
16
26.56
29
0
2023/24
428
16
26.75
29
0
2024/25
425
16
26.56
29
0
2025/26
430
16
26.88
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 69 in 1978/79 → 263, +194 pupils.
Biggest loss in a single year: 1978/79: 298 in 1977/78 → 69, -229 pupils.
Largest single-class increase: 4th Class in 2021/22 (48 → 54, +6).
Largest single-class decrease: 6th Class in 2021/22 (51 → 45, -6).
Largest cohort-step gain: SI → 1st in 2025/26 (52 → 56, +4).
Largest cohort-step loss: 5th → 6th in 2022/23 (50 → 43, -7).
Overall: 338 (1974/75) → 430 (2025/26), 92.
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
54
58
57.2
6
Senior Infants
52
57
55.8
6
1st Class
56
58
56.7
6
2nd Class
53
57
55.3
6
3rd Class
51
54
52.3
6
4th Class
48
54
51.3
6
5th Class
49
55
51.0
6
6th Class
43
52
48.3
6
Total
69
520
414.1
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).