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
15.56
2025/26
Mainstream classes
9
2025/26
Largest class group
22
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
249
12
20.75
27
0
2007/08
248
12
20.67
24
0
2008/09
234
12
19.50
24
0
2009/10
231
12
19.25
26
0
2010/11
230
11
20.91
31
1
2011/12
217
11
19.73
33
1
2012/13
222
10
22.20
31
2
2013/14
215
11
19.55
28
0
2014/15
218
11
19.82
28
0
2015/16
209
11
19.00
29
0
2016/17
224
11
20.36
27
0
2017/18
230
12
19.17
24
0
2019/20
212
11
19.27
22
0
2020/21
194
10
19.40
29
0
2021/22
186
10
18.60
28
0
2022/23
177
9
19.67
30
1
2023/24
178
9
19.78
29
0
2024/25
160
9
17.78
24
0
2025/26
140
9
15.56
22
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 209 in 2015/16 → 224, +15 pupils.
Biggest loss in a single year: 1993/94: 623 in 1982/83 → 348, -275 pupils.
Largest single-class increase: 4th Class in 2022/23 (22 → 42, +20).
Largest single-class decrease: 2nd Class in 2023/24 (31 → 15, -16).
Largest cohort-step gain: 3rd → 4th in 2025/26 (18 → 24, +6).
Largest cohort-step loss: 4th → 5th in 2024/25 (35 → 30, -5).
Overall: 712 (1975/76) → 152 (2025/26), -560.
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
0
0
0.0
1
Senior Infants
0
0
0.0
1
1st Class
17
32
24.7
6
2nd Class
15
39
26.0
6
3rd Class
18
37
26.8
6
4th Class
22
42
30.0
6
5th Class
25
44
32.8
6
6th Class
29
43
34.2
6
Total
152
712
320.1
40
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).