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
23.00
2025/26
Mainstream classes
19
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+
2009/10
387
19
20.37
28
0
2010/11
399
19
21.00
28
0
2011/12
385
19
20.26
27
0
2012/13
391
16
24.44
27
0
2013/14
397
16
24.81
29
0
2014/15
405
16
25.31
30
1
2015/16
413
16
25.81
30
1
2016/17
411
16
25.69
29
0
2017/18
420
16
26.25
28
0
2019/20
436
18
24.22
29
0
2020/21
435
18
24.17
29
0
2021/22
420
18
23.33
30
1
2022/23
420
18
23.33
29
0
2023/24
438
18
24.33
29
0
2024/25
425
19
22.37
29
0
2025/26
437
19
23.00
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2015/16: 421 in 2014/15 → 440, +19 pupils.
Biggest loss in a single year: 2011/12: 406 in 2010/11 → 388, -18 pupils.
Largest single-class increase: Junior Infants in 2025/26 (44 → 74, +30).
Largest single-class decrease: Junior Infants in 2024/25 (68 → 44, -24).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (48 → 56, +8).
Largest cohort-step loss: 1st → 2nd in 2021/22 (53 → 50, -3).
Overall: 395 (2009/10) → 467 (2025/26), 72.
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
42
74
54.7
6
Senior Infants
46
67
52.5
6
1st Class
47
72
54.8
6
2nd Class
46
58
51.7
6
3rd Class
52
58
54.8
6
4th Class
52
61
55.8
6
5th Class
53
60
55.7
6
6th Class
51
58
54.5
6
Total
388
468
437.2
17
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).