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
22.17
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
120
5
24.00
29
0
2007/08
116
5
23.20
26
0
2008/09
125
5
25.00
31
1
2009/10
127
5
25.40
31
1
2010/11
118
5
23.60
26
0
2011/12
124
5
24.80
28
0
2012/13
120
5
24.00
33
1
2013/14
112
5
22.40
25
0
2014/15
110
4
27.50
30
1
2015/16
117
4
29.25
31
2
2016/17
106
5
21.20
29
0
2017/18
105
4
26.25
31
2
2019/20
100
5
20.00
24
0
2020/21
119
5
23.80
30
1
2021/22
118
5
23.60
26
0
2022/23
121
5
24.20
31
1
2023/24
115
5
23.00
26
0
2024/25
122
5
24.40
30
1
2025/26
133
6
22.17
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2020/21: 100 in 2019/20 → 119, +19 pupils.
Biggest loss in a single year: 1999/00: 151 in 1998/99 → 137, -14 pupils.
Largest single-class increase: 4th Class in 2022/23 (7 → 24, +17).
Largest single-class decrease: 4th Class in 2021/22 (22 → 7, -15).
Largest cohort-step gain: SI → 1st in 2025/26 (11 → 21, +10).
Largest cohort-step loss: SI → 1st in 2022/23 (12 → 10, -2).
Overall: 158 (1997/98) → 139 (2025/26), -19.
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
10
18
13.3
6
Senior Infants
11
22
13.8
6
1st Class
10
21
14.0
6
2nd Class
10
21
14.2
6
3rd Class
8
22
14.3
6
4th Class
7
24
17.0
6
5th Class
10
25
18.0
6
6th Class
11
26
18.5
6
Total
100
158
124.9
29
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).