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
24.31
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
261
10
26.10
33
1
2007/08
261
10
26.10
31
2
2008/09
261
11
23.73
30
1
2009/10
249
10
24.90
31
2
2010/11
236
10
23.60
30
2
2011/12
274
10
27.40
31
3
2012/13
287
10
28.70
35
5
2013/14
289
11
26.27
31
3
2014/15
308
11
28.00
32
4
2015/16
320
11
29.09
34
4
2016/17
319
12
26.58
30
2
2017/18
347
13
26.69
30
3
2019/20
374
14
26.71
31
1
2020/21
377
14
26.93
32
4
2021/22
364
15
24.27
30
1
2022/23
377
15
25.13
32
2
2023/24
408
16
25.50
30
1
2024/25
403
16
25.19
30
1
2025/26
389
16
24.31
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 246 in 1978/79 → 277, +31 pupils.
Biggest loss in a single year: 2004/05: 314 in 2003/04 → 288, -26 pupils.
Largest single-class increase: Senior Infants in 2023/24 (35 → 53, +18).
Largest single-class decrease: 2nd Class in 2021/22 (58 → 44, -14).
Largest cohort-step gain: 2nd → 3rd in 2022/23 (44 → 48, +4).
Largest cohort-step loss: 1st → 2nd in 2025/26 (55 → 51, -4).
Overall: 188 (1974/75) → 389 (2025/26), 201.
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
55
45.5
6
Senior Infants
35
57
47.8
6
1st Class
38
56
48.3
6
2nd Class
40
58
48.3
6
3rd Class
42
56
49.2
6
4th Class
40
57
49.0
6
5th Class
42
59
50.3
6
6th Class
39
59
47.8
6
Total
188
408
313.7
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).