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
21.50
2025/26
Mainstream classes
6
2025/26
Largest class group
25
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
86
4
21.50
27
0
2007/08
100
4
25.00
31
1
2008/09
123
5
24.60
28
0
2009/10
135
5
27.00
31
3
2010/11
152
6
25.33
27
0
2011/12
153
6
25.50
35
2
2012/13
165
6
27.50
34
3
2013/14
160
6
26.67
33
2
2014/15
162
6
27.00
29
0
2015/16
151
6
25.17
28
0
2016/17
144
6
24.00
30
2
2017/18
143
6
23.83
36
1
2019/20
146
6
24.33
32
2
2020/21
133
6
22.17
30
2
2021/22
135
6
22.50
26
0
2022/23
132
9
14.67
22
0
2023/24
140
6
23.33
29
0
2024/25
137
6
22.83
26
0
2025/26
129
6
21.50
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 100 in 2007/08 → 123, +23 pupils.
Biggest loss in a single year: 2020/21: 146 in 2019/20 → 133, -13 pupils.
Largest single-class increase: 5th Class in 2022/23 (10 → 18, +8).
Largest single-class decrease: 3rd Class in 2022/23 (23 → 14, -9).
Largest cohort-step gain: 2nd → 3rd in 2021/22 (21 → 23, +2).
Largest cohort-step loss: SI → 1st in 2021/22 (23 → 20, -3).
Overall: 49 (1975/76) → 129 (2025/26), 80.
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
13
19
16.2
6
Senior Infants
12
23
17.3
6
1st Class
12
21
16.5
6
2nd Class
12
21
17.0
6
3rd Class
14
23
18.7
6
4th Class
11
22
16.7
6
5th Class
10
22
16.5
6
6th Class
10
22
15.5
6
Total
49
165
110.1
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).