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
19.36
2025/26
Mainstream classes
11
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
122
13
9.38
14
0
2007/08
116
12
9.67
13
0
2008/09
113
12
9.42
13
0
2009/10
106
12
8.83
13
0
2010/11
100
12
8.33
13
0
2011/12
151
11
13.73
17
0
2012/13
147
11
13.36
17
0
2013/14
177
11
16.09
21
0
2014/15
159
12
13.25
17
0
2015/16
162
12
13.50
18
0
2016/17
171
11
15.55
19
0
2017/18
158
11
14.36
19
0
2019/20
169
9
18.78
28
0
2020/21
159
8
19.88
31
1
2021/22
180
8
22.50
32
1
2022/23
199
8
24.88
35
3
2023/24
251
12
20.92
25
0
2024/25
214
12
17.83
27
0
2025/26
213
11
19.36
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 174 in 2006/07 → 248, +74 pupils.
Biggest loss in a single year: 2011/12: 270 in 2010/11 → 151, -119 pupils.
Largest single-class increase: Senior Infants in 2023/24 (35 → 53, +18).
Largest single-class decrease: Senior Infants in 2024/25 (53 → 32, -21).
Largest cohort-step gain: JI → SI in 2023/24 (33 → 53, +20).
Largest cohort-step loss: 1st → 2nd in 2025/26 (50 → 24, -26).
Overall: 320 (1974/75) → 224 (2025/26), -96.
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
48
36.5
6
Senior Infants
20
53
35.8
6
1st Class
20
50
34.7
6
2nd Class
13
24
19.3
6
3rd Class
11
26
19.5
6
4th Class
16
25
20.2
6
5th Class
17
25
21.0
6
6th Class
13
22
17.5
6
Total
147
336
222.2
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).