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
18.38
2025/26
Mainstream classes
8
2025/26
Largest class group
21
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
199
8
24.88
28
0
2007/08
198
8
24.75
27
0
2008/09
203
8
25.38
28
0
2009/10
203
8
25.38
28
0
2010/11
200
8
25.00
28
0
2011/12
201
8
25.12
29
0
2012/13
208
8
26.00
30
1
2013/14
208
8
26.00
30
1
2014/15
211
8
26.38
30
1
2015/16
211
8
26.38
30
1
2016/17
210
8
26.25
30
1
2017/18
212
8
26.50
30
1
2019/20
201
8
25.12
28
0
2020/21
185
8
23.12
26
0
2021/22
172
8
21.50
26
0
2022/23
167
8
20.88
26
0
2023/24
162
8
20.25
22
0
2024/25
162
8
20.25
23
0
2025/26
147
8
18.38
21
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 87 in 1983/84 → 232, +145 pupils.
Biggest loss in a single year: 2020/21: 201 in 2019/20 → 185, -16 pupils.
Largest single-class increase: Junior Infants in 2021/22 (19 → 23, +4).
Largest single-class decrease: 1st Class in 2021/22 (26 → 17, -9).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (16 → 20, +4).
Largest cohort-step loss: JI → SI in 2022/23 (23 → 20, -3).
Overall: 34 (1981/82) → 147 (2025/26), 113.
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
23
19.3
6
Senior Infants
15
23
19.3
6
1st Class
17
26
20.8
6
2nd Class
16
23
19.8
6
3rd Class
20
23
20.8
6
4th Class
18
26
21.2
6
5th Class
18
26
21.8
6
6th Class
20
26
22.7
6
Total
34
234
192.8
36
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).