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
21.25
2025/26
Mainstream classes
8
2025/26
Largest class group
26
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
150
6
25.00
34
2
2007/08
153
6
25.50
33
1
2008/09
155
7
22.14
31
1
2009/10
179
7
25.57
31
1
2010/11
173
7
24.71
28
0
2011/12
181
7
25.86
29
0
2012/13
182
7
26.00
36
2
2013/14
185
7
26.43
35
2
2014/15
187
7
26.71
38
2
2015/16
182
8
22.75
29
0
2016/17
188
8
23.50
28
0
2017/18
192
8
24.00
28
0
2019/20
171
8
21.38
26
0
2020/21
162
8
20.25
25
0
2021/22
157
7
22.43
31
1
2022/23
164
7
23.43
32
1
2023/24
164
7
23.43
33
1
2024/25
162
8
20.25
27
0
2025/26
170
8
21.25
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2009/10: 157 in 2008/09 → 187, +30 pupils.
Biggest loss in a single year: 1993/94: 108 in 1982/83 → 89, -19 pupils.
Largest single-class increase: 4th Class in 2025/26 (12 → 23, +11).
Largest single-class decrease: 1st Class in 2021/22 (21 → 10, -11).
Largest cohort-step gain: 1st → 2nd in 2025/26 (22 → 28, +6).
Largest cohort-step loss: SI → 1st in 2021/22 (13 → 10, -3).
Overall: 125 (1975/76) → 200 (2025/26), 75.
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
18
34
24.0
6
Senior Infants
13
27
20.2
6
1st Class
10
26
19.5
6
2nd Class
13
28
21.0
6
3rd Class
12
25
21.0
6
4th Class
12
24
20.3
6
5th Class
12
26
20.5
6
6th Class
18
27
21.7
6
Total
83
216
155.9
41
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).