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
21.86
2025/26
Mainstream classes
7
2025/26
Largest class group
36
2025/26
Classes with 30+ pupils
1
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
155
6
25.83
29
0
2007/08
147
6
24.50
28
0
2008/09
150
6
25.00
28
0
2009/10
146
6
24.33
29
0
2010/11
156
6
26.00
30
1
2011/12
164
6
27.33
33
2
2012/13
178
6
29.67
33
3
2013/14
174
7
24.86
33
1
2014/15
178
7
25.43
37
1
2015/16
188
7
26.86
34
3
2016/17
185
7
26.43
33
3
2017/18
204
7
29.14
36
4
2019/20
204
8
25.50
29
0
2020/21
202
8
25.25
30
1
2021/22
180
8
22.50
27
0
2022/23
190
8
23.75
29
0
2023/24
183
8
22.88
25
0
2024/25
172
7
24.57
33
2
2025/26
153
7
21.86
36
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 135 in 2005/06 → 155, +20 pupils.
Biggest loss in a single year: 1993/94: 184 in 1983/84 → 131, -53 pupils.
Largest single-class increase: Junior Infants in 2022/23 (18 → 27, +9).
Largest single-class decrease: 6th Class in 2021/22 (27 → 18, -9).
Largest cohort-step gain: SI → 1st in 2023/24 (18 → 21, +3).
Largest cohort-step loss: 5th → 6th in 2021/22 (22 → 18, -4).
Overall: 141 (1974/75) → 156 (2025/26), 15.
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
17
27
20.5
6
Senior Infants
17
26
21.3
6
1st Class
19
24
21.8
6
2nd Class
19
25
22.5
6
3rd Class
17
30
22.8
6
4th Class
20
28
24.2
6
5th Class
19
28
23.7
6
6th Class
18
27
23.7
6
Total
120
204
158.6
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).