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
22.86
2025/26
Mainstream classes
7
2025/26
Largest class group
29
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
175
6
29.17
31
4
2007/08
165
7
23.57
27
0
2008/09
173
6
28.83
32
4
2009/10
180
6
30.00
33
3
2010/11
169
7
24.14
33
2
2011/12
180
6
30.00
33
4
2012/13
184
7
26.29
34
2
2013/14
197
7
28.14
31
3
2014/15
203
7
29.00
35
4
2015/16
204
7
29.14
34
4
2016/17
194
8
24.25
28
0
2017/18
200
7
28.57
35
2
2019/20
200
8
25.00
29
0
2020/21
192
7
27.43
30
2
2021/22
182
7
26.00
30
1
2022/23
178
7
25.43
30
1
2023/24
173
7
24.71
33
1
2024/25
168
7
24.00
30
1
2025/26
160
7
22.86
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1983/84: 218 in 1982/83 → 233, +15 pupils.
Biggest loss in a single year: 1993/94: 233 in 1983/84 → 200, -33 pupils.
Largest single-class increase: Junior Infants in 2023/24 (13 → 23, +10).
Largest single-class decrease: 5th Class in 2024/25 (29 → 20, -9).
Largest cohort-step gain: 1st → 2nd in 2025/26 (14 → 18, +4).
Largest cohort-step loss: 4th → 5th in 2024/25 (22 → 20, -2).
Overall: 265 (1974/75) → 166 (2025/26), -99.
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
13
23
19.3
6
Senior Infants
12
22
18.5
6
1st Class
14
23
19.7
6
2nd Class
18
28
21.5
6
3rd Class
20
29
23.3
6
4th Class
20
29
24.2
6
5th Class
20
29
24.3
6
6th Class
21
29
26.0
6
Total
155
265
190.2
43
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).