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
24.08
2025/26
Mainstream classes
12
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
273
10
27.30
30
1
2007/08
307
11
27.91
30
2
2008/09
345
13
26.54
30
1
2009/10
328
13
25.23
30
2
2010/11
314
12
26.17
30
1
2011/12
324
12
27.00
31
2
2012/13
320
12
26.67
32
4
2013/14
315
12
26.25
30
1
2014/15
315
12
26.25
30
2
2015/16
319
12
26.58
30
2
2016/17
308
12
25.67
29
0
2017/18
308
12
25.67
30
1
2019/20
310
12
25.83
30
1
2020/21
294
12
24.50
30
1
2021/22
308
12
25.67
30
1
2022/23
305
12
25.42
30
1
2023/24
287
12
23.92
28
0
2024/25
300
12
25.00
29
0
2025/26
289
12
24.08
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1977/78: 517 in 1976/77 → 598, +81 pupils.
Biggest loss in a single year: 1993/94: 512 in 1983/84 → 380, -132 pupils.
Largest single-class increase: Senior Infants in 2024/25 (18 → 53, +35).
Largest single-class decrease: Senior Infants in 2023/24 (50 → 18, -32).
Largest cohort-step gain: 1st → 2nd in 2021/22 (20 → 26, +6).
Largest cohort-step loss: SI → 1st in 2023/24 (50 → 44, -6).
Overall: 517 (1976/77) → 295 (2025/26), -222.
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
20
48
34.7
6
Senior Infants
18
53
40.5
6
1st Class
20
55
36.2
6
2nd Class
23
53
34.3
6
3rd Class
26
52
38.0
6
4th Class
27
54
39.0
6
5th Class
25
53
38.8
6
6th Class
27
51
36.7
6
Total
239
664
352.9
41
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).