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
22.60
2025/26
Mainstream classes
5
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
127
5
25.40
33
3
2007/08
135
5
27.00
34
2
2008/09
164
6
27.33
41
2
2009/10
162
6
27.00
38
2
2010/11
156
6
26.00
45
2
2011/12
152
6
25.33
38
2
2012/13
152
6
25.33
37
2
2013/14
145
6
24.17
35
2
2014/15
134
6
22.33
35
2
2015/16
130
5
26.00
34
2
2016/17
121
5
24.20
37
1
2017/18
126
5
25.20
37
1
2019/20
138
5
27.60
40
2
2020/21
127
5
25.40
33
1
2021/22
123
5
24.60
31
1
2022/23
121
5
24.20
29
0
2023/24
123
5
24.60
32
1
2024/25
119
5
23.80
28
0
2025/26
113
5
22.60
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 135 in 2007/08 → 164, +29 pupils.
Biggest loss in a single year: 1993/94: 109 in 1982/83 → 70, -39 pupils.
Largest single-class increase: 2nd Class in 2021/22 (16 → 24, +8).
Largest single-class decrease: 5th Class in 2025/26 (25 → 16, -9).
Largest cohort-step gain: 1st → 2nd in 2025/26 (15 → 17, +2).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (12 → 11, -1).
Overall: 105 (1975/76) → 113 (2025/26), 8.
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
13
11.7
6
Senior Infants
11
16
12.8
6
1st Class
10
24
15.2
6
2nd Class
9
24
15.8
6
3rd Class
9
24
15.5
6
4th Class
11
25
16.2
6
5th Class
12
25
16.8
6
6th Class
12
25
17.0
6
Total
68
164
117.1
41
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).