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
22.36
2025/26
Mainstream classes
11
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
2
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
222
9
24.67
34
1
2007/08
245
10
24.50
30
1
2008/09
235
10
23.50
31
2
2009/10
245
10
24.50
31
1
2010/11
231
10
23.10
32
1
2011/12
265
10
26.50
34
3
2012/13
258
10
25.80
31
1
2013/14
253
10
25.30
31
1
2014/15
251
10
25.10
31
1
2015/16
269
10
26.90
33
3
2016/17
256
11
23.27
33
1
2017/18
275
10
27.50
34
2
2019/20
251
10
25.10
32
2
2020/21
262
10
26.20
32
2
2021/22
283
12
23.58
29
0
2022/23
275
12
22.92
29
0
2023/24
273
12
22.75
29
0
2024/25
260
12
21.67
31
1
2025/26
246
11
22.36
31
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1976/77: 676 in 1974/75 → 711, +35 pupils.
Biggest loss in a single year: 1993/94: 680 in 1983/84 → 451, -229 pupils.
Largest single-class increase: 3rd Class in 2025/26 (29 → 44, +15).
Largest single-class decrease: Senior Infants in 2023/24 (63 → 45, -18).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (37 → 44, +7).
Largest cohort-step loss: SI → 1st in 2022/23 (54 → 25, -29).
Overall: 676 (1974/75) → 266 (2025/26), -410.
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
32
62
45.8
6
Senior Infants
38
63
49.7
6
1st Class
21
39
28.7
6
2nd Class
24
37
29.2
6
3rd Class
25
44
31.2
6
4th Class
24
31
28.8
6
5th Class
26
31
27.7
6
6th Class
27
32
29.0
6
Total
242
711
375.1
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).