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
20.67
2025/26
Mainstream classes
6
2025/26
Largest class group
27
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
68
3
22.67
31
1
2007/08
78
3
26.00
30
1
2008/09
84
4
21.00
25
0
2009/10
96
4
24.00
30
1
2010/11
102
4
25.50
31
1
2011/12
107
4
26.75
34
2
2012/13
125
5
25.00
31
1
2013/14
126
5
25.20
34
2
2014/15
139
5
27.80
34
3
2015/16
154
6
25.67
33
2
2016/17
160
6
26.67
35
3
2017/18
168
6
28.00
37
3
2019/20
178
7
25.43
35
2
2020/21
170
7
24.29
35
2
2021/22
162
8
20.25
28
0
2022/23
153
6
25.50
33
2
2023/24
144
6
24.00
28
0
2024/25
134
6
22.33
27
0
2025/26
124
6
20.67
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2012/13: 107 in 2011/12 → 125, +18 pupils.
Biggest loss in a single year: 2020/21: 178 in 2019/20 → 170, -8 pupils.
Largest single-class increase: Senior Infants in 2023/24 (9 → 23, +14).
Largest single-class decrease: 4th Class in 2023/24 (28 → 18, -10).
Largest cohort-step gain: JI → SI in 2023/24 (21 → 23, +2).
Largest cohort-step loss: SI → 1st in 2024/25 (23 → 21, -2).
Overall: 60 (1975/76) → 136 (2025/26), 76.
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
21
15.3
6
Senior Infants
9
23
16.2
6
1st Class
10
21
17.7
6
2nd Class
10
28
19.7
6
3rd Class
10
28
18.7
6
4th Class
17
28
21.2
6
5th Class
16
27
22.3
6
6th Class
16
26
21.7
6
Total
52
178
97.8
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).