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
16.23
2025/26
Mainstream classes
13
2025/26
Largest class group
24
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
313
15
20.87
25
0
2007/08
319
15
21.27
29
0
2008/09
314
16
19.62
29
0
2009/10
307
16
19.19
27
0
2010/11
305
16
19.06
27
0
2011/12
310
15
20.67
30
1
2012/13
311
15
20.73
28
0
2013/14
307
15
20.47
27
0
2014/15
311
15
20.73
24
0
2015/16
275
15
18.33
23
0
2016/17
269
14
19.21
26
0
2017/18
244
13
18.77
23
0
2019/20
185
10
18.50
23
0
2020/21
168
10
16.80
21
0
2021/22
193
10
19.30
24
0
2022/23
199
11
18.09
24
0
2023/24
192
12
16.00
23
0
2024/25
217
13
16.69
23
0
2025/26
211
13
16.23
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2005/06: 279 in 2004/05 → 319, +40 pupils.
Biggest loss in a single year: 1993/94: 581 in 1982/83 → 438, -143 pupils.
Largest single-class increase: Senior Infants in 2022/23 (28 → 41, +13).
Largest single-class decrease: 5th Class in 2022/23 (24 → 7, -17).
Largest cohort-step gain: SI → 1st in 2021/22 (29 → 36, +7).
Largest cohort-step loss: SI → 1st in 2023/24 (41 → 34, -7).
Overall: 751 (1974/75) → 223 (2025/26), -528.
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
25
42
32.8
6
Senior Infants
26
41
30.8
6
1st Class
23
36
29.5
6
2nd Class
13
35
26.3
6
3rd Class
7
34
22.3
6
4th Class
7
35
21.0
6
5th Class
7
32
19.2
6
6th Class
8
24
16.8
6
Total
180
751
369.9
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).