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
21.50
2025/26
Mainstream classes
14
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
420
16
26.25
30
2
2007/08
415
16
25.94
29
0
2008/09
425
16
26.56
30
2
2009/10
426
16
26.62
30
2
2010/11
425
16
26.56
31
1
2011/12
410
16
25.62
30
1
2012/13
423
15
28.20
32
6
2013/14
447
16
27.94
30
7
2014/15
446
16
27.88
30
1
2015/16
448
16
28.00
30
2
2016/17
435
16
27.19
30
1
2017/18
425
16
26.56
30
1
2019/20
403
16
25.19
28
0
2020/21
383
16
23.94
28
0
2021/22
384
15
25.60
29
0
2022/23
377
16
23.56
27
0
2023/24
362
16
22.62
26
0
2024/25
330
15
22.00
25
0
2025/26
301
14
21.50
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1983/84: 519 in 1982/83 → 612, +93 pupils.
Biggest loss in a single year: 1993/94: 612 in 1983/84 → 410, -202 pupils.
Largest single-class increase: 1st Class in 2022/23 (89 → 103, +14).
Largest single-class decrease: Junior Infants in 2022/23 (108 → 82, -26).
Largest cohort-step gain: JI → SI in 2021/22 (98 → 102, +4).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (107 → 0, -107).
Overall: 397 (1974/75) → 313 (2025/26), -84.
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
68
108
87.7
6
Senior Infants
65
103
88.8
6
1st Class
81
103
90.5
6
2nd Class
81
107
93.0
6
3rd Class
0
0
0.0
1
4th Class
0
0
0.0
1
5th Class
0
0
0.0
1
6th Class
0
0
0.0
1
Total
313
612
435.0
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).