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
24.83
2025/26
Mainstream classes
6
2025/26
Largest class group
31
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
120
4
30.00
34
2
2007/08
118
5
23.60
27
0
2008/09
132
5
26.40
31
1
2009/10
128
5
25.60
28
0
2010/11
137
5
27.40
31
1
2011/12
134
5
26.80
32
1
2012/13
145
5
29.00
36
2
2013/14
143
6
23.83
28
0
2014/15
137
5
27.40
34
1
2015/16
154
5
30.80
33
3
2016/17
148
6
24.67
31
1
2017/18
167
6
27.83
33
2
2019/20
173
6
28.83
32
2
2020/21
174
7
24.86
30
1
2021/22
181
7
25.86
32
1
2022/23
180
7
25.71
35
2
2023/24
161
7
23.00
31
2
2024/25
155
7
22.14
26
0
2025/26
149
6
24.83
31
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2017/18: 148 in 2016/17 → 167, +19 pupils.
Biggest loss in a single year: 2023/24: 180 in 2022/23 → 161, -19 pupils.
Largest single-class increase: 3rd Class in 2021/22 (19 → 27, +8).
Largest single-class decrease: 1st Class in 2023/24 (27 → 19, -8).
Largest cohort-step gain: 4th → 5th in 2021/22 (20 → 23, +3).
Largest cohort-step loss: 1st → 2nd in 2022/23 (25 → 22, -3).
Overall: 93 (1975/76) → 149 (2025/26), 56.
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
12
25
18.0
6
Senior Infants
13
26
20.2
6
1st Class
17
27
20.7
6
2nd Class
17
27
21.5
6
3rd Class
18
27
21.7
6
4th Class
20
27
22.5
6
5th Class
17
24
21.0
6
6th Class
18
25
21.2
6
Total
84
181
124.1
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).