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
21.80
2025/26
Mainstream classes
5
2025/26
Largest class group
28
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
89
4
22.25
29
0
2007/08
98
4
24.50
29
0
2008/09
105
4
26.25
28
0
2009/10
116
4
29.00
32
3
2010/11
110
5
22.00
28
0
2011/12
120
5
24.00
27
0
2012/13
133
5
26.60
32
1
2013/14
134
5
26.80
34
1
2014/15
141
5
28.20
30
2
2015/16
147
5
29.40
34
4
2016/17
160
6
26.67
32
2
2017/18
168
6
28.00
35
2
2019/20
167
6
27.83
33
3
2020/21
161
6
26.83
36
2
2021/22
145
6
24.17
32
1
2022/23
137
6
22.83
29
0
2023/24
129
6
21.50
27
0
2024/25
119
5
23.80
31
1
2025/26
109
5
21.80
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2012/13: 120 in 2011/12 → 133, +13 pupils.
Biggest loss in a single year: 1994/95: 131 in 1993/94 → 105, -26 pupils.
Largest single-class increase: 2nd Class in 2022/23 (12 → 18, +6).
Largest single-class decrease: 6th Class in 2025/26 (19 → 10, -9).
Largest cohort-step gain: 3rd → 4th in 2024/25 (15 → 17, +2).
Largest cohort-step loss: JI → SI in 2021/22 (19 → 16, -3).
Overall: 120 (1974/75) → 109 (2025/26), -11.
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
11
19
15.0
6
Senior Infants
10
17
14.7
6
1st Class
14
17
15.5
6
2nd Class
12
19
15.7
6
3rd Class
11
22
16.2
6
4th Class
12
22
17.7
6
5th Class
12
22
18.7
6
6th Class
10
25
20.0
6
Total
83
168
120.7
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).