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
19.86
2025/26
Mainstream classes
36
2025/26
Largest class group
23
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
459
21
21.86
27
0
2007/08
539
25
21.56
27
0
2008/09
614
28
21.93
28
0
2009/10
647
30
21.57
28
0
2010/11
697
31
22.48
28
0
2011/12
736
34
21.65
24
0
2012/13
748
34
22.00
24
0
2013/14
756
34
22.24
24
0
2014/15
757
34
22.26
24
0
2015/16
756
34
22.24
25
0
2016/17
754
34
22.18
25
0
2017/18
747
34
21.97
25
0
2019/20
760
34
22.35
25
0
2020/21
770
34
22.65
25
0
2021/22
765
36
21.25
24
0
2022/23
766
37
20.70
23
0
2023/24
741
37
20.03
23
0
2024/25
725
37
19.59
23
0
2025/26
715
36
19.86
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 570 in 2007/08 → 654, +84 pupils.
Biggest loss in a single year: 2001/02: 469 in 2000/01 → 428, -41 pupils.
Largest single-class increase: 6th Class in 2021/22 (92 → 117, +25).
Largest single-class decrease: 4th Class in 2021/22 (107 → 90, -17).
Largest cohort-step gain: JI → SI in 2022/23 (84 → 98, +14).
Largest cohort-step loss: 3rd → 4th in 2021/22 (93 → 90, -3).
Overall: 545 (1993/94) → 727 (2025/26), 182.
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
76
93
81.8
6
Senior Infants
77
98
88.8
6
1st Class
80
97
92.0
6
2nd Class
82
104
93.8
6
3rd Class
89
103
96.3
6
4th Class
87
107
96.2
6
5th Class
86
111
100.5
6
6th Class
88
117
100.5
6
Total
419
782
631.6
33
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).