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
21.83
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
158
6
26.33
30
1
2007/08
167
6
27.83
30
2
2008/09
173
6
28.83
33
2
2009/10
171
6
28.50
31
2
2010/11
166
6
27.67
30
2
2011/12
153
6
25.50
34
3
2012/13
149
6
24.83
29
0
2013/14
148
6
24.67
28
0
2014/15
142
6
23.67
29
0
2015/16
146
5
29.20
35
1
2016/17
141
6
23.50
28
0
2017/18
146
5
29.20
33
2
2019/20
168
6
28.00
35
3
2020/21
165
10
16.50
25
0
2021/22
154
10
15.40
25
0
2022/23
148
11
13.45
23
0
2023/24
150
6
25.00
29
0
2024/25
145
6
24.17
27
0
2025/26
131
6
21.83
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2003/04: 120 in 2002/03 → 141, +21 pupils.
Biggest loss in a single year: 1993/94: 145 in 1983/84 → 82, -63 pupils.
Largest single-class increase: Junior Infants in 2023/24 (11 → 21, +10).
Largest single-class decrease: 2nd Class in 2025/26 (26 → 13, -13).
Largest cohort-step gain: 1st → 2nd in 2022/23 (19 → 22, +3).
Largest cohort-step loss: SI → 1st in 2021/22 (22 → 19, -3).
Overall: 134 (1975/76) → 131 (2025/26), -3.
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
7
23
15.3
6
Senior Infants
12
23
17.5
6
1st Class
13
24
18.5
6
2nd Class
13
26
18.3
6
3rd Class
14
24
19.3
6
4th Class
15
23
18.5
6
5th Class
17
25
20.0
6
6th Class
18
25
21.3
6
Total
82
173
137.6
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).