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
18.73
2025/26
Mainstream classes
15
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
228
10
22.80
27
0
2007/08
234
10
23.40
31
1
2008/09
234
11
21.27
29
0
2009/10
222
10
22.20
25
0
2010/11
232
10
23.20
38
1
2011/12
286
11
26.00
38
1
2012/13
288
11
26.18
32
2
2013/14
277
11
25.18
34
1
2014/15
275
10
27.50
31
2
2015/16
278
10
27.80
34
6
2016/17
284
10
28.40
34
5
2017/18
267
13
20.54
26
0
2019/20
263
12
21.92
26
0
2020/21
267
13
20.54
27
0
2021/22
260
15
17.33
27
0
2022/23
273
14
19.50
24
0
2023/24
262
14
18.71
25
0
2024/25
266
15
17.73
24
0
2025/26
281
15
18.73
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 146 in 1974/75 → 328, +182 pupils.
Biggest loss in a single year: 1993/94: 337 in 1983/84 → 306, -31 pupils.
Largest single-class increase: 1st Class in 2021/22 (34 → 47, +13).
Largest single-class decrease: 1st Class in 2022/23 (47 → 28, -19).
Largest cohort-step gain: 3rd → 4th in 2022/23 (27 → 34, +7).
Largest cohort-step loss: JI → SI in 2023/24 (30 → 26, -4).
Overall: 146 (1974/75) → 287 (2025/26), 141.
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
28
33
30.7
6
Senior Infants
26
49
32.8
6
1st Class
28
47
33.3
6
2nd Class
27
45
33.0
6
3rd Class
27
44
35.2
6
4th Class
34
48
38.8
6
5th Class
26
49
36.7
6
6th Class
27
43
33.7
6
Total
146
342
293.0
43
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).