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
23.88
2025/26
Mainstream classes
8
2025/26
Largest class group
36
2025/26
Classes with 30+ pupils
2
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
87
3
29.00
30
1
2007/08
102
4
25.50
31
1
2008/09
106
4
26.50
31
1
2009/10
117
4
29.25
33
2
2010/11
129
5
25.80
30
1
2011/12
126
5
25.20
32
2
2012/13
137
5
27.40
30
1
2013/14
154
6
25.67
33
2
2014/15
169
6
28.17
32
3
2015/16
178
6
29.67
34
3
2016/17
197
7
28.14
33
3
2017/18
202
7
28.86
34
3
2019/20
208
7
29.71
37
3
2020/21
214
8
26.75
34
2
2021/22
209
8
26.12
34
2
2022/23
212
8
26.50
34
2
2023/24
205
8
25.62
35
2
2024/25
199
8
24.88
36
2
2025/26
191
8
23.88
36
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 178 in 2015/16 → 197, +19 pupils.
Biggest loss in a single year: 1993/94: 108 in 1983/84 → 83, -25 pupils.
Largest single-class increase: 5th Class in 2021/22 (21 → 30, +9).
Largest single-class decrease: 3rd Class in 2025/26 (36 → 21, -15).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (28 → 31, +3).
Largest cohort-step loss: SI → 1st in 2023/24 (24 → 22, -2).
Overall: 100 (1975/76) → 191 (2025/26), 91.
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
17
34
23.5
6
Senior Infants
21
34
25.5
6
1st Class
20
34
24.5
6
2nd Class
21
35
25.2
6
3rd Class
21
36
27.0
6
4th Class
22
36
28.3
6
5th Class
21
30
25.7
6
6th Class
21
30
25.3
6
Total
59
214
123.5
42
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).