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
18.77
2025/26
Mainstream classes
22
2025/26
Largest class group
27
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
402
19
21.16
27
0
2007/08
429
21
20.43
26
0
2008/09
434
24
18.08
23
0
2009/10
447
23
19.43
25
0
2010/11
453
23
19.70
26
0
2011/12
502
24
20.92
27
0
2012/13
468
24
19.50
24
0
2013/14
468
24
19.50
23
0
2014/15
467
23
20.30
23
0
2015/16
446
22
20.27
25
0
2016/17
445
22
20.23
26
0
2017/18
436
22
19.82
26
0
2019/20
435
21
20.71
24
0
2020/21
399
21
19.00
24
0
2021/22
386
20
19.30
23
0
2022/23
408
20
20.40
24
0
2023/24
408
23
17.74
22
0
2024/25
397
23
17.26
22
0
2025/26
413
22
18.77
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1980/81: 441 in 1979/80 → 528, +87 pupils.
Biggest loss in a single year: 1996/97: 587 in 1995/96 → 525, -62 pupils.
Largest single-class increase: Junior Infants in 2025/26 (23 → 54, +31).
Largest single-class decrease: 5th Class in 2021/22 (69 → 46, -23).
Largest cohort-step gain: 4th → 5th in 2022/23 (54 → 65, +11).
Largest cohort-step loss: 4th → 5th in 2023/24 (67 → 61, -6).
Overall: 179 (1974/75) → 437 (2025/26), 258.
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
23
54
41.2
6
Senior Infants
32
53
43.0
6
1st Class
39
58
47.3
6
2nd Class
36
62
49.7
6
3rd Class
44
65
53.7
6
4th Class
47
67
54.2
6
5th Class
46
69
59.3
6
6th Class
47
65
57.8
6
Total
179
661
463.3
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).