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
21.50
2025/26
Mainstream classes
6
2025/26
Largest class group
25
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
102
4
25.50
32
1
2007/08
117
4
29.25
32
1
2008/09
128
5
25.60
32
1
2009/10
131
5
26.20
33
1
2010/11
137
5
27.40
31
1
2011/12
140
5
28.00
33
2
2012/13
131
5
26.20
27
0
2013/14
122
5
24.40
29
0
2014/15
122
5
24.40
27
0
2015/16
128
5
25.60
29
0
2016/17
130
5
26.00
28
0
2017/18
125
5
25.00
28
0
2019/20
118
5
23.60
29
0
2020/21
114
6
19.00
24
0
2021/22
116
5
23.20
29
0
2022/23
120
5
24.00
28
0
2023/24
122
5
24.40
27
0
2024/25
133
5
26.60
30
1
2025/26
129
6
21.50
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 102 in 2006/07 → 117, +15 pupils.
Biggest loss in a single year: 1993/94: 138 in 1983/84 → 97, -41 pupils.
Largest single-class increase: 5th Class in 2021/22 (10 → 21, +11).
Largest single-class decrease: 5th Class in 2023/24 (22 → 12, -10).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (18 → 21, +3).
Largest cohort-step loss: SI → 1st in 2025/26 (22 → 19, -3).
Overall: 134 (1974/75) → 135 (2025/26), 1.
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
20
15.2
6
Senior Infants
11
22
16.0
6
1st Class
10
19
14.5
6
2nd Class
10
18
13.2
6
3rd Class
11
21
15.5
6
4th Class
11
21
16.3
6
5th Class
10
22
16.5
6
6th Class
10
21
16.5
6
Total
65
140
113.6
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).