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
22.31
2025/26
Mainstream classes
16
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
422
16
26.38
30
1
2007/08
453
17
26.65
29
0
2008/09
453
17
26.65
28
0
2009/10
454
17
26.71
28
0
2010/11
455
17
26.76
28
0
2011/12
468
17
27.53
28
0
2012/13
473
17
27.82
28
0
2013/14
465
17
27.35
28
0
2014/15
466
17
27.41
28
0
2015/16
420
17
24.71
28
0
2016/17
426
16
26.62
28
0
2017/18
427
16
26.69
28
0
2019/20
433
16
27.06
28
0
2020/21
433
16
27.06
28
0
2021/22
405
16
25.31
28
0
2022/23
413
16
25.81
29
0
2023/24
392
16
24.50
29
0
2024/25
368
16
23.00
28
0
2025/26
357
16
22.31
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1981/82: 377 in 1980/81 → 488, +111 pupils.
Biggest loss in a single year: 2015/16: 473 in 2014/15 → 427, -46 pupils.
Largest single-class increase: Senior Infants in 2023/24 (36 → 50, +14).
Largest single-class decrease: Junior Infants in 2021/22 (54 → 37, -17).
Largest cohort-step gain: SI → 1st in 2022/23 (49 → 54, +5).
Largest cohort-step loss: JI → SI in 2021/22 (54 → 49, -5).
Overall: 90 (1976/77) → 364 (2025/26), 274.
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
33
54
42.3
6
Senior Infants
36
54
44.5
6
1st Class
39
55
48.3
6
2nd Class
36
57
49.2
6
3rd Class
40
55
50.2
6
4th Class
49
56
52.2
6
5th Class
53
56
54.7
6
6th Class
50
56
54.5
6
Total
90
546
414.4
41
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).