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
20.84
2025/26
Mainstream classes
19
2025/26
Largest class group
26
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
430
20
21.50
26
0
2007/08
438
21
20.86
23
0
2008/09
453
22
20.59
26
0
2009/10
460
22
20.91
26
0
2010/11
462
22
21.00
24
0
2011/12
466
23
20.26
24
0
2012/13
443
22
20.14
27
0
2013/14
445
21
21.19
27
0
2014/15
449
21
21.38
27
0
2015/16
434
21
20.67
27
0
2016/17
419
20
20.95
28
0
2017/18
425
20
21.25
28
0
2019/20
404
19
21.26
27
0
2020/21
410
19
21.58
26
0
2021/22
404
20
20.20
26
0
2022/23
399
20
19.95
26
0
2023/24
377
21
17.95
25
0
2024/25
372
20
18.60
25
0
2025/26
396
19
20.84
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 124 in 1983/84 → 756, +632 pupils.
Biggest loss in a single year: 1995/96: 707 in 1994/95 → 643, -64 pupils.
Largest single-class increase: 1st Class in 2024/25 (36 → 50, +14).
Largest single-class decrease: 1st Class in 2023/24 (51 → 36, -15).
Largest cohort-step gain: 3rd → 4th in 2025/26 (54 → 62, +8).
Largest cohort-step loss: 4th → 5th in 2024/25 (47 → 43, -4).
Overall: 18 (1980/81) → 396 (2025/26), 378.
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
36
52
44.8
6
Senior Infants
39
49
44.3
6
1st Class
36
51
46.2
6
2nd Class
38
52
48.3
6
3rd Class
40
57
49.5
6
4th Class
47
62
53.0
6
5th Class
43
59
52.3
6
6th Class
46
60
54.5
6
Total
18
756
420.6
37
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).