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
22.53
2025/26
Mainstream classes
17
2025/26
Largest class group
29
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
394
14
28.14
35
5
2007/08
405
15
27.00
33
3
2008/09
428
16
26.75
33
2
2009/10
434
16
27.12
32
2
2010/11
409
16
25.56
32
2
2011/12
426
16
26.62
30
1
2012/13
427
16
26.69
31
2
2013/14
423
16
26.44
30
1
2014/15
421
16
26.31
31
2
2015/16
416
16
26.00
31
1
2016/17
433
16
27.06
32
2
2017/18
417
16
26.06
31
2
2019/20
429
17
25.24
29
0
2020/21
417
18
23.17
28
0
2021/22
400
18
22.22
27
0
2022/23
428
17
25.18
30
1
2023/24
420
18
23.33
30
1
2024/25
406
18
22.56
29
0
2025/26
383
17
22.53
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2022/23: 413 in 2021/22 → 441, +28 pupils.
Biggest loss in a single year: 1997/98: 423 in 1996/97 → 387, -36 pupils.
Largest single-class increase: 2nd Class in 2023/24 (49 → 67, +18).
Largest single-class decrease: Senior Infants in 2024/25 (76 → 43, -33).
Largest cohort-step gain: JI → SI in 2022/23 (66 → 74, +8).
Largest cohort-step loss: 1st → 2nd in 2021/22 (74 → 35, -39).
Overall: 445 (1993/94) → 400 (2025/26), -45.
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
38
75
56.8
6
Senior Infants
43
76
64.0
6
1st Class
45
78
69.8
6
2nd Class
35
67
50.5
6
3rd Class
36
63
47.2
6
4th Class
35
66
45.5
6
5th Class
35
47
40.8
6
6th Class
36
44
40.8
6
Total
339
455
418.1
33
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).