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
25.50
2025/26
Mainstream classes
6
2025/26
Largest class group
28
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
150
7
21.43
29
0
2007/08
160
7
22.86
30
1
2008/09
149
7
21.29
26
0
2009/10
148
7
21.14
27
0
2010/11
146
7
20.86
25
0
2011/12
148
7
21.14
26
0
2012/13
162
6
27.00
30
1
2013/14
169
6
28.17
31
3
2014/15
160
6
26.67
29
0
2015/16
160
6
26.67
29
0
2016/17
164
6
27.33
31
1
2017/18
163
6
27.17
30
1
2019/20
153
6
25.50
30
1
2020/21
148
7
21.14
26
0
2021/22
154
6
25.67
29
0
2022/23
156
6
26.00
29
0
2023/24
160
6
26.67
30
3
2024/25
156
6
26.00
31
1
2025/26
153
6
25.50
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 218 in 1974/75 → 237, +19 pupils.
Biggest loss in a single year: 1999/00: 191 in 1998/99 → 160, -31 pupils.
Largest single-class increase: Junior Infants in 2021/22 (19 → 26, +7).
Largest single-class decrease: 3rd Class in 2021/22 (26 → 15, -11).
Largest cohort-step gain: JI → SI in 2025/26 (20 → 25, +5).
Largest cohort-step loss: SI → 1st in 2022/23 (19 → 17, -2).
Overall: 218 (1974/75) → 158 (2025/26), -60.
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
26
20.3
6
Senior Infants
12
25
21.0
6
1st Class
12
25
19.5
6
2nd Class
12
24
17.7
6
3rd Class
13
26
18.7
6
4th Class
13
27
18.2
6
5th Class
14
27
18.5
6
6th Class
15
27
21.5
6
Total
148
251
180.6
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).