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
20.50
2025/26
Mainstream classes
6
2025/26
Largest class group
24
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
171
7
24.43
30
1
2007/08
165
7
23.57
28
0
2008/09
168
7
24.00
28
0
2009/10
170
7
24.29
29
0
2010/11
163
7
23.29
26
0
2011/12
174
7
24.86
30
2
2012/13
163
7
23.29
31
1
2013/14
162
7
23.14
28
0
2014/15
158
6
26.33
32
4
2015/16
162
6
27.00
31
3
2016/17
150
6
25.00
27
0
2017/18
142
6
23.67
33
2
2019/20
128
6
21.33
27
0
2020/21
122
5
24.40
29
0
2021/22
128
5
25.60
29
0
2022/23
123
5
24.60
28
0
2023/24
128
6
21.33
26
0
2024/25
126
6
21.00
26
0
2025/26
123
6
20.50
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1977/78: 263 in 1976/77 → 282, +19 pupils.
Biggest loss in a single year: 1995/96: 277 in 1994/95 → 240, -37 pupils.
Largest single-class increase: 1st Class in 2023/24 (11 → 17, +6).
Largest single-class decrease: 4th Class in 2022/23 (19 → 14, -5).
Largest cohort-step gain: SI → 1st in 2025/26 (16 → 20, +4).
Largest cohort-step loss: SI → 1st in 2022/23 (13 → 11, -2).
Overall: 279 (1974/75) → 135 (2025/26), -144.
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
10
19
14.8
6
Senior Infants
12
19
15.3
6
1st Class
11
20
16.0
6
2nd Class
13
20
15.3
6
3rd Class
13
19
15.0
6
4th Class
12
19
15.2
6
5th Class
15
19
17.2
6
6th Class
16
22
18.7
6
Total
134
298
200.6
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).