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
23.44
2025/26
Mainstream classes
16
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
457
16
28.56
34
7
2007/08
469
17
27.59
33
7
2008/09
478
17
28.12
33
5
2009/10
466
17
27.41
34
7
2010/11
460
17
27.06
33
3
2011/12
445
17
26.18
31
2
2012/13
443
16
27.69
35
3
2013/14
427
16
26.69
32
4
2014/15
431
16
26.94
34
4
2015/16
428
16
26.75
34
4
2016/17
428
16
26.75
32
4
2017/18
435
16
27.19
31
2
2019/20
418
16
26.12
30
3
2020/21
403
16
25.19
30
2
2021/22
395
16
24.69
30
1
2022/23
406
16
25.38
30
1
2023/24
384
16
24.00
29
0
2024/25
380
16
23.75
29
0
2025/26
375
16
23.44
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2003/04: 402 in 2002/03 → 433, +31 pupils.
Biggest loss in a single year: 2023/24: 406 in 2022/23 → 384, -22 pupils.
Largest single-class increase: 1st Class in 2021/22 (41 → 52, +11).
Largest single-class decrease: Junior Infants in 2023/24 (41 → 33, -8).
Largest cohort-step gain: 3rd → 4th in 2022/23 (47 → 55, +8).
Largest cohort-step loss: 5th → 6th in 2023/24 (55 → 53, -2).
Overall: 397 (2000/01) → 381 (2025/26), -16.
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
33
47
40.5
6
Senior Infants
35
50
42.3
6
1st Class
38
52
45.0
6
2nd Class
43
54
48.2
6
3rd Class
47
53
51.2
6
4th Class
50
56
52.8
6
5th Class
51
58
54.7
6
6th Class
53
59
56.8
6
Total
380
478
426.4
26
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).