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
17.75
2025/26
Mainstream classes
28
2025/26
Largest class group
23
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
194
14
13.86
19
0
2007/08
294
17
17.29
23
0
2008/09
326
18
18.11
21
0
2009/10
327
19
17.21
21
0
2010/11
318
19
16.74
20
0
2011/12
366
19
19.26
23
0
2012/13
372
19
19.58
25
0
2013/14
409
20
20.45
25
0
2014/15
438
20
21.90
25
0
2015/16
436
21
20.76
28
0
2016/17
468
22
21.27
27
0
2017/18
501
23
21.78
25
0
2019/20
538
25
21.52
25
0
2020/21
502
27
18.59
22
0
2021/22
499
26
19.19
23
0
2022/23
500
26
19.23
26
0
2023/24
500
27
18.52
24
0
2024/25
512
27
18.96
23
0
2025/26
497
28
17.75
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 275 in 2006/07 → 375, +100 pupils.
Biggest loss in a single year: 1993/94: 803 in 1983/84 → 431, -372 pupils.
Largest single-class increase: 1st Class in 2023/24 (82 → 101, +19).
Largest single-class decrease: Senior Infants in 2023/24 (97 → 81, -16).
Largest cohort-step gain: 3rd → 4th in 2025/26 (45 → 56, +11).
Largest cohort-step loss: 1st → 2nd in 2024/25 (101 → 53, -48).
Overall: 723 (1974/75) → 527 (2025/26), -196.
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
73
95
82.2
6
Senior Infants
77
97
83.5
6
1st Class
82
101
87.3
6
2nd Class
43
55
48.0
6
3rd Class
37
58
48.7
6
4th Class
39
56
50.0
6
5th Class
42
62
53.7
6
6th Class
46
64
55.5
6
Total
215
819
483.2
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).