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
23.71
2025/26
Mainstream classes
14
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
1
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
411
15
27.40
31
2
2007/08
445
16
27.81
30
8
2008/09
446
16
27.88
31
5
2009/10
450
16
28.12
30
4
2010/11
440
16
27.50
30
3
2011/12
436
16
27.25
32
3
2012/13
426
16
26.62
31
2
2013/14
440
16
27.50
31
4
2014/15
446
16
27.88
31
7
2015/16
437
16
27.31
32
5
2016/17
432
16
27.00
32
4
2017/18
417
16
26.06
31
4
2019/20
408
16
25.50
33
1
2020/21
385
16
24.06
33
1
2021/22
359
15
23.93
29
0
2022/23
349
15
23.27
30
1
2023/24
340
14
24.29
32
3
2024/25
335
14
23.93
32
1
2025/26
332
14
23.71
31
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 371 in 1983/84 → 473, +102 pupils.
Biggest loss in a single year: 1994/95: 473 in 1993/94 → 435, -38 pupils.
Largest single-class increase: Junior Infants in 2024/25 (34 → 51, +17).
Largest single-class decrease: 4th Class in 2025/26 (46 → 29, -17).
Largest cohort-step gain: SI → 1st in 2025/26 (35 → 41, +6).
Largest cohort-step loss: 3rd → 4th in 2023/24 (54 → 52, -2).
Overall: 42 (1978/79) → 338 (2025/26), 296.
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
29
51
37.7
6
Senior Infants
28
52
37.5
6
1st Class
30
51
38.8
6
2nd Class
29
53
40.7
6
3rd Class
29
54
43.2
6
4th Class
29
56
47.0
6
5th Class
48
56
51.5
6
6th Class
47
60
54.7
6
Total
42
473
368.4
39
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).