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
22.19
2025/26
Mainstream classes
16
2025/26
Largest class group
25
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
432
16
27.00
32
6
2007/08
421
16
26.31
32
5
2008/09
413
16
25.81
32
3
2009/10
415
16
25.94
32
2
2010/11
413
16
25.81
28
0
2011/12
433
16
27.06
29
0
2012/13
434
16
27.12
29
0
2013/14
431
16
26.94
29
0
2014/15
434
16
27.12
30
1
2015/16
432
16
27.00
29
0
2016/17
440
16
27.50
29
0
2017/18
430
20
21.50
29
0
2019/20
408
20
20.40
29
0
2020/21
400
19
21.05
29
0
2021/22
386
19
20.32
27
0
2022/23
390
19
20.53
28
0
2023/24
368
20
18.40
26
0
2024/25
372
19
19.58
26
0
2025/26
355
16
22.19
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1996/97: 351 in 1995/96 → 382, +31 pupils.
Biggest loss in a single year: 1993/94: 535 in 1982/83 → 410, -125 pupils.
Largest single-class increase: 5th Class in 2024/25 (44 → 49, +5).
Largest single-class decrease: 5th Class in 2023/24 (53 → 44, -9).
Largest cohort-step gain: 2nd → 3rd in 2024/25 (42 → 48, +6).
Largest cohort-step loss: JI → SI in 2025/26 (43 → 39, -4).
Overall: 816 (1974/75) → 355 (2025/26), -461.
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
39
47
43.7
6
Senior Infants
39
46
43.8
6
1st Class
43
48
44.7
6
2nd Class
42
50
46.5
6
3rd Class
44
52
47.8
6
4th Class
47
52
49.2
6
5th Class
44
55
50.5
6
6th Class
47
57
52.3
6
Total
351
816
467.0
42
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).