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
24.25
2025/26
Mainstream classes
8
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
81
3
27.00
29
0
2007/08
88
4
22.00
23
0
2008/09
95
4
23.75
26
0
2009/10
96
4
24.00
25
0
2010/11
98
4
24.50
27
0
2011/12
91
4
22.75
27
0
2012/13
100
4
25.00
29
0
2013/14
108
4
27.00
30
1
2014/15
109
4
27.25
29
0
2015/16
117
5
23.40
29
0
2016/17
144
6
24.00
31
1
2017/18
145
6
24.17
32
3
2019/20
158
6
26.33
32
2
2020/21
163
6
27.17
34
2
2021/22
175
9
19.44
28
0
2022/23
189
8
23.62
33
3
2023/24
198
7
28.29
31
3
2024/25
197
8
24.62
30
2
2025/26
194
8
24.25
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 117 in 2015/16 → 144, +27 pupils.
Biggest loss in a single year: 2004/05: 81 in 2003/04 → 71, -10 pupils.
Largest single-class increase: Junior Infants in 2022/23 (19 → 30, +11).
Largest single-class decrease: 3rd Class in 2021/22 (28 → 15, -13).
Largest cohort-step gain: 1st → 2nd in 2021/22 (16 → 19, +3).
Largest cohort-step loss: 5th → 6th in 2022/23 (23 → 19, -4).
Overall: 28 (1974/75) → 194 (2025/26), 166.
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
30
24.0
6
Senior Infants
20
30
25.7
6
1st Class
16
30
24.7
6
2nd Class
14
30
23.2
6
3rd Class
15
30
23.5
6
4th Class
18
28
23.5
6
5th Class
17
28
22.3
6
6th Class
15
25
19.2
6
Total
20
198
89.8
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).