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
24.94
2025/26
Mainstream classes
16
2025/26
Largest class group
28
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
170
7
24.29
33
1
2007/08
177
7
25.29
32
1
2008/09
193
8
24.12
30
1
2009/10
209
8
26.12
32
2
2010/11
240
9
26.67
32
3
2011/12
267
10
26.70
34
3
2012/13
292
11
26.55
33
3
2013/14
345
13
26.54
34
3
2014/15
375
14
26.79
33
3
2015/16
401
15
26.73
34
5
2016/17
433
16
27.06
33
7
2017/18
449
16
28.06
32
5
2019/20
451
16
28.19
31
4
2020/21
449
16
28.06
31
4
2021/22
440
16
27.50
31
2
2022/23
435
16
27.19
31
1
2023/24
426
16
26.62
31
1
2024/25
409
16
25.56
28
0
2025/26
399
16
24.94
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2013/14: 292 in 2012/13 → 345, +53 pupils.
Biggest loss in a single year: 2024/25: 426 in 2023/24 → 409, -17 pupils.
Largest single-class increase: Junior Infants in 2025/26 (43 → 50, +7).
Largest single-class decrease: Junior Infants in 2024/25 (54 → 43, -11).
Largest cohort-step gain: 2nd → 3rd in 2024/25 (49 → 50, +1).
Largest cohort-step loss: 1st → 2nd in 2023/24 (51 → 49, -2).
Overall: 19 (1994/95) → 399 (2025/26), 380.
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
43
54
50.8
6
Senior Infants
42
56
50.8
6
1st Class
51
56
53.3
6
2nd Class
49
56
52.8
6
3rd Class
50
59
53.8
6
4th Class
48
59
53.8
6
5th Class
52
59
54.8
6
6th Class
52
62
56.0
6
Total
19
451
252.1
32
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).