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
25.72
2025/26
Mainstream classes
32
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
766
27
28.37
32
11
2007/08
782
28
27.93
31
5
2008/09
796
28
28.43
30
5
2009/10
814
29
28.07
30
3
2010/11
861
30
28.70
30
9
2011/12
879
30
29.30
31
15
2012/13
914
31
29.48
31
16
2013/14
947
32
29.59
31
19
2014/15
946
32
29.56
31
23
2015/16
950
32
29.69
31
22
2016/17
936
32
29.25
31
8
2017/18
929
32
29.03
31
5
2019/20
949
32
29.66
31
21
2020/21
942
32
29.44
31
13
2021/22
922
32
28.81
31
9
2022/23
912
32
28.50
31
7
2023/24
889
32
27.78
31
4
2024/25
867
32
27.09
30
2
2025/26
823
32
25.72
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 824 in 1983/84 → 934, +110 pupils.
Biggest loss in a single year: 2001/02: 848 in 2000/01 → 789, -59 pupils.
Largest single-class increase: Senior Infants in 2024/25 (103 → 108, +5).
Largest single-class decrease: Junior Infants in 2021/22 (116 → 106, -10).
Largest cohort-step gain: JI → SI in 2022/23 (106 → 110, +4).
Largest cohort-step loss: 3rd → 4th in 2025/26 (111 → 107, -4).
Overall: 500 (1974/75) → 834 (2025/26), 334.
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
94
116
105.0
6
Senior Infants
103
116
109.3
6
1st Class
100
117
109.7
6
2nd Class
98
120
111.0
6
3rd Class
102
121
113.8
6
4th Class
107
119
114.8
6
5th Class
112
118
115.0
6
6th Class
113
118
115.7
6
Total
500
950
834.6
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).