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
26.57
2025/26
Mainstream classes
7
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
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
62
3
20.67
25
0
2007/08
61
3
20.33
26
0
2008/09
73
3
24.33
26
0
2009/10
79
3
26.33
29
0
2010/11
97
4
24.25
34
1
2011/12
115
4
28.75
34
1
2012/13
120
5
24.00
29
0
2013/14
128
5
25.60
35
1
2014/15
153
6
25.50
31
1
2015/16
149
6
24.83
45
1
2016/17
161
7
23.00
34
1
2017/18
166
7
23.71
26
0
2019/20
167
6
27.83
32
2
2020/21
163
6
27.17
33
3
2021/22
162
6
27.00
31
1
2022/23
167
6
27.83
30
1
2023/24
169
7
24.14
29
0
2024/25
169
7
24.14
29
0
2025/26
186
7
26.57
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2014/15: 128 in 2013/14 → 153, +25 pupils.
Biggest loss in a single year: 1997/98: 59 in 1996/97 → 47, -12 pupils.
Largest single-class increase: Junior Infants in 2025/26 (20 → 31, +11).
Largest single-class decrease: 5th Class in 2021/22 (27 → 17, -10).
Largest cohort-step gain: 5th → 6th in 2025/26 (16 → 18, +2).
Largest cohort-step loss: 4th → 5th in 2021/22 (19 → 17, -2).
Overall: 34 (1974/75) → 186 (2025/26), 152.
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
17
31
23.7
6
Senior Infants
17
29
22.5
6
1st Class
16
29
22.0
6
2nd Class
14
29
21.2
6
3rd Class
14
27
19.8
6
4th Class
16
22
18.7
6
5th Class
16
27
20.0
6
6th Class
18
27
21.5
6
Total
30
186
91.4
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).