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
26.81
2025/26
Mainstream classes
16
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
3
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
161
6
26.83
32
3
2007/08
184
7
26.29
31
1
2008/09
182
7
26.00
31
1
2009/10
185
7
26.43
34
1
2010/11
210
8
26.25
31
2
2011/12
208
8
26.00
30
1
2012/13
213
8
26.62
31
1
2013/14
224
8
28.00
31
2
2014/15
232
8
29.00
32
4
2015/16
230
9
25.56
31
3
2016/17
235
9
26.11
31
2
2017/18
260
10
26.00
30
1
2019/20
322
12
26.83
30
5
2020/21
336
14
24.00
30
3
2021/22
388
15
25.87
31
5
2022/23
423
16
26.44
30
5
2023/24
425
16
26.56
30
4
2024/25
441
16
27.56
30
5
2025/26
429
16
26.81
30
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2021/22: 347 in 2020/21 → 400, +53 pupils.
Biggest loss in a single year: 1993/94: 108 in 1983/84 → 80, -28 pupils.
Largest single-class increase: 3rd Class in 2021/22 (30 → 59, +29).
Largest single-class decrease: Senior Infants in 2021/22 (56 → 44, -12).
Largest cohort-step gain: 4th → 5th in 2025/26 (56 → 63, +7).
Largest cohort-step loss: 3rd → 4th in 2023/24 (57 → 54, -3).
Overall: 88 (1974/75) → 439 (2025/26), 351.
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
40
59
52.3
6
Senior Infants
44
60
53.3
6
1st Class
50
59
54.3
6
2nd Class
51
60
56.0
6
3rd Class
30
61
52.3
6
4th Class
34
60
49.5
6
5th Class
30
63
48.2
6
6th Class
30
60
42.7
6
Total
80
453
192.3
42
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).