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
24.00
2025/26
Mainstream classes
6
2025/26
Largest class group
29
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
139
5
27.80
30
1
2007/08
148
5
29.60
33
1
2008/09
148
6
24.67
29
0
2009/10
147
6
24.50
32
2
2010/11
140
6
23.33
30
1
2011/12
161
6
26.83
29
0
2012/13
178
7
25.43
29
0
2013/14
180
7
25.71
28
0
2014/15
181
7
25.86
33
1
2015/16
183
7
26.14
35
1
2016/17
183
7
26.14
35
2
2017/18
180
7
25.71
35
1
2019/20
167
7
23.86
30
1
2020/21
157
10
15.70
28
0
2021/22
150
10
15.00
28
0
2022/23
142
6
23.67
28
0
2023/24
137
6
22.83
27
0
2024/25
139
6
23.17
26
0
2025/26
144
6
24.00
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2011/12: 140 in 2010/11 → 161, +21 pupils.
Biggest loss in a single year: 2003/04: 165 in 2002/03 → 143, -22 pupils.
Largest single-class increase: Junior Infants in 2024/25 (12 → 17, +5).
Largest single-class decrease: 5th Class in 2021/22 (28 → 20, -8).
Largest cohort-step gain: 3rd → 4th in 2023/24 (17 → 19, +2).
Largest cohort-step loss: JI → SI in 2022/23 (18 → 16, -2).
Overall: 170 (1974/75) → 144 (2025/26), -26.
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
12
21
17.2
6
Senior Infants
13
20
16.7
6
1st Class
14
19
16.5
6
2nd Class
14
19
16.7
6
3rd Class
15
20
17.3
6
4th Class
15
21
18.2
6
5th Class
16
28
20.5
6
6th Class
17
28
21.8
6
Total
133
188
162.7
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).