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
25.61
2025/26
Mainstream classes
18
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
269
10
26.90
31
1
2007/08
287
11
26.09
30
1
2008/09
284
12
23.67
29
0
2009/10
295
12
24.58
29
0
2010/11
293
12
24.42
29
0
2011/12
321
13
24.69
30
1
2012/13
338
13
26.00
30
1
2013/14
337
13
25.92
30
1
2014/15
336
13
25.85
31
1
2015/16
334
13
25.69
28
0
2016/17
343
15
22.87
25
0
2017/18
358
14
25.57
28
0
2019/20
389
15
25.93
30
2
2020/21
397
15
26.47
32
5
2021/22
405
16
25.31
31
1
2022/23
435
17
25.59
30
1
2023/24
440
18
24.44
27
0
2024/25
440
18
24.44
27
0
2025/26
461
18
25.61
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 220 in 1983/84 → 275, +55 pupils.
Biggest loss in a single year: 1980/81: 320 in 1979/80 → 229, -91 pupils.
Largest single-class increase: Junior Infants in 2025/26 (41 → 77, +36).
Largest single-class decrease: Junior Infants in 2024/25 (71 → 41, -30).
Largest cohort-step gain: 4th → 5th in 2021/22 (46 → 52, +6).
Largest cohort-step loss: JI → SI in 2023/24 (57 → 54, -3).
Overall: 242 (1974/75) → 467 (2025/26), 225.
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
41
77
57.5
6
Senior Infants
45
75
54.0
6
1st Class
48
76
55.3
6
2nd Class
50
60
52.7
6
3rd Class
51
60
53.7
6
4th Class
46
59
52.3
6
5th Class
42
60
52.2
6
6th Class
44
65
54.3
6
Total
220
467
307.3
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).