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
24.00
2025/26
Mainstream classes
10
2025/26
Largest class group
29
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
339
12
28.25
34
5
2007/08
331
12
27.58
32
4
2008/09
315
12
26.25
30
1
2009/10
299
11
27.18
32
3
2010/11
292
11
26.55
31
2
2011/12
300
11
27.27
31
4
2012/13
304
11
27.64
32
2
2013/14
314
11
28.55
33
3
2014/15
306
12
25.50
31
4
2015/16
306
11
27.82
32
5
2016/17
308
11
28.00
33
3
2017/18
282
11
25.64
32
2
2019/20
283
11
25.73
30
2
2020/21
262
11
23.82
31
2
2021/22
265
10
26.50
31
2
2022/23
249
10
24.90
30
2
2023/24
245
10
24.50
29
0
2024/25
253
10
25.30
33
2
2025/26
240
10
24.00
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 306 in 2005/06 → 339, +33 pupils.
Biggest loss in a single year: 1993/94: 584 in 1982/83 → 485, -99 pupils.
Largest single-class increase: 6th Class in 2021/22 (29 → 50, +21).
Largest single-class decrease: 2nd Class in 2025/26 (48 → 25, -23).
Largest cohort-step gain: SI → 1st in 2022/23 (31 → 35, +4).
Largest cohort-step loss: JI → SI in 2021/22 (36 → 31, -5).
Overall: 657 (1974/75) → 240 (2025/26), -417.
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
26
42
32.8
6
Senior Infants
20
44
30.3
6
1st Class
19
44
32.3
6
2nd Class
19
48
32.5
6
3rd Class
20
48
32.2
6
4th Class
23
35
28.5
6
5th Class
21
49
31.7
6
6th Class
25
50
32.0
6
Total
240
680
387.4
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).