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
16.56
2025/26
Mainstream classes
18
2025/26
Largest class group
22
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
281
16
17.56
28
0
2007/08
302
17
17.76
22
0
2008/09
289
17
17.00
24
0
2009/10
237
16
14.81
24
0
2010/11
214
14
15.29
26
0
2011/12
230
13
17.69
25
0
2012/13
264
12
22.00
37
1
2013/14
304
15
20.27
24
0
2014/15
329
16
20.56
30
1
2015/16
338
17
19.88
28
0
2016/17
346
18
19.22
28
0
2017/18
375
19
19.74
29
0
2019/20
407
19
21.42
27
0
2020/21
403
19
21.21
26
0
2021/22
392
20
19.60
25
0
2022/23
418
20
20.90
26
0
2023/24
403
20
20.15
26
0
2024/25
313
19
16.47
21
0
2025/26
298
18
16.56
22
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 289 in 1978/79 → 359, +70 pupils.
Biggest loss in a single year: 2024/25: 403 in 2023/24 → 313, -90 pupils.
Largest single-class increase: 3rd Class in 2022/23 (45 → 68, +23).
Largest single-class decrease: 4th Class in 2024/25 (67 → 40, -27).
Largest cohort-step gain: 1st → 2nd in 2022/23 (45 → 53, +8).
Largest cohort-step loss: SI → 1st in 2024/25 (52 → 36, -16).
Overall: 476 (1974/75) → 298 (2025/26), -178.
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
31
49
40.2
6
Senior Infants
31
53
44.3
6
1st Class
33
66
46.2
6
2nd Class
37
65
49.7
6
3rd Class
36
68
47.8
6
4th Class
37
67
47.3
6
5th Class
38
51
46.8
6
6th Class
42
51
48.8
6
Total
200
476
300.7
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).