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
18.33
2025/26
Mainstream classes
12
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
197
10
19.70
31
1
2007/08
220
10
22.00
36
1
2008/09
222
11
20.18
34
1
2009/10
219
13
16.85
23
0
2010/11
209
14
14.93
20
0
2011/12
245
12
20.42
30
1
2012/13
224
12
18.67
29
0
2013/14
226
13
17.38
31
1
2014/15
224
13
17.23
32
1
2015/16
221
12
18.42
28
0
2016/17
212
11
19.27
34
1
2017/18
200
10
20.00
31
1
2019/20
225
10
22.50
30
1
2020/21
231
11
21.00
25
0
2021/22
242
11
22.00
26
0
2022/23
238
12
19.83
26
0
2023/24
246
12
20.50
26
0
2024/25
235
13
18.08
25
0
2025/26
220
12
18.33
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 98 in 1978/79 → 208, +110 pupils.
Biggest loss in a single year: 1993/94: 355 in 1982/83 → 323, -32 pupils.
Largest single-class increase: 6th Class in 2021/22 (24 → 37, +13).
Largest single-class decrease: 6th Class in 2022/23 (37 → 24, -13).
Largest cohort-step gain: JI → SI in 2022/23 (27 → 30, +3).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (39 → 36, -3).
Overall: 98 (1978/79) → 226 (2025/26), 128.
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
23
35
28.3
6
Senior Infants
22
35
29.7
6
1st Class
24
37
30.7
6
2nd Class
24
39
30.8
6
3rd Class
25
36
30.5
6
4th Class
25
35
29.3
6
5th Class
25
37
29.3
6
6th Class
24
37
27.7
6
Total
98
355
243.3
38
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).