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
23.56
2025/26
Mainstream classes
16
2025/26
Largest class group
28
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
242
9
26.89
31
1
2007/08
274
10
27.40
32
4
2008/09
300
11
27.27
35
5
2009/10
309
12
25.75
31
1
2010/11
329
13
25.31
32
2
2011/12
342
13
26.31
32
1
2012/13
369
14
26.36
31
2
2013/14
399
15
26.60
30
1
2014/15
431
16
26.94
30
4
2015/16
433
16
27.06
30
3
2016/17
426
16
26.62
30
1
2017/18
428
16
26.75
29
0
2019/20
424
16
26.50
29
0
2020/21
407
16
25.44
30
1
2021/22
407
16
25.44
29
0
2022/23
398
16
24.88
29
0
2023/24
393
16
24.56
29
0
2024/25
383
16
23.94
29
0
2025/26
377
16
23.56
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 242 in 2006/07 → 274, +32 pupils.
Biggest loss in a single year: 1993/94: 245 in 1982/83 → 178, -67 pupils.
Largest single-class increase: Junior Infants in 2021/22 (32 → 50, +18).
Largest single-class decrease: 1st Class in 2022/23 (53 → 33, -20).
Largest cohort-step gain: 2nd → 3rd in 2024/25 (36 → 40, +4).
Largest cohort-step loss: JI → SI in 2022/23 (50 → 48, -2).
Overall: 256 (1975/76) → 377 (2025/26), 121.
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
32
50
43.2
6
Senior Infants
33
51
44.2
6
1st Class
33
53
46.0
6
2nd Class
36
56
48.5
6
3rd Class
40
56
50.5
6
4th Class
42
57
52.3
6
5th Class
49
57
54.5
6
6th Class
48
59
55.0
6
Total
165
433
300.9
41
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).