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
24.25
2025/26
Mainstream classes
4
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
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
88
4
22.00
25
0
2007/08
93
4
23.25
27
0
2008/09
93
4
23.25
26
0
2009/10
94
4
23.50
26
0
2010/11
99
4
24.75
27
0
2011/12
100
4
25.00
28
0
2012/13
108
4
27.00
30
1
2013/14
106
4
26.50
34
1
2014/15
105
4
26.25
30
1
2015/16
100
4
25.00
34
1
2016/17
94
4
23.50
30
1
2017/18
91
4
22.75
34
1
2019/20
87
4
21.75
34
1
2020/21
84
4
21.00
23
0
2021/22
88
4
22.00
30
1
2022/23
88
4
22.00
31
1
2023/24
94
4
23.50
29
0
2024/25
100
4
25.00
29
0
2025/26
97
4
24.25
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 74 in 1983/84 → 141, +67 pupils.
Biggest loss in a single year: 2004/05: 125 in 2003/04 → 109, -16 pupils.
Largest single-class increase: Junior Infants in 2021/22 (11 → 19, +8).
Largest single-class decrease: Senior Infants in 2025/26 (18 → 10, -8).
Largest cohort-step gain: JI → SI in 2024/25 (17 → 18, +1).
Largest cohort-step loss: SI → 1st in 2023/24 (19 → 17, -2).
Overall: 56 (1974/75) → 97 (2025/26), 41.
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
8
19
12.8
6
Senior Infants
10
19
13.7
6
1st Class
11
18
13.7
6
2nd Class
10
17
12.2
6
3rd Class
8
17
11.3
6
4th Class
8
11
9.7
6
5th Class
6
11
9.0
6
6th Class
6
14
9.5
6
Total
41
149
97.0
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).