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
22.26
2025/26
Mainstream classes
31
2025/26
Largest class group
27
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
521
18
28.94
31
10
2007/08
631
22
28.68
30
11
2008/09
752
26
28.92
30
14
2009/10
797
28
28.46
30
9
2010/11
821
29
28.31
30
11
2011/12
870
31
28.06
30
9
2012/13
892
32
27.88
30
6
2013/14
907
33
27.48
30
2
2014/15
892
33
27.03
29
0
2015/16
886
33
26.85
31
2
2016/17
856
32
26.75
30
1
2017/18
860
32
26.88
30
4
2019/20
840
32
26.25
29
0
2020/21
819
32
25.59
28
0
2021/22
793
32
24.78
29
0
2022/23
800
32
25.00
28
0
2023/24
767
34
22.56
28
0
2024/25
728
33
22.06
27
0
2025/26
690
31
22.26
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 397 in 2005/06 → 521, +124 pupils.
Biggest loss in a single year: 2023/24: 812 in 2022/23 → 779, -33 pupils.
Largest single-class increase: Junior Infants in 2022/23 (82 → 108, +26).
Largest single-class decrease: Senior Infants in 2024/25 (105 → 77, -28).
Largest cohort-step gain: JI → SI in 2025/26 (74 → 80, +6).
Largest cohort-step loss: JI → SI in 2021/22 (94 → 89, -5).
Overall: 30 (2000/01) → 714 (2025/26), 684.
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
74
108
87.3
6
Senior Infants
77
106
90.7
6
1st Class
78
104
91.7
6
2nd Class
86
110
97.5
6
3rd Class
85
113
96.7
6
4th Class
83
111
99.7
6
5th Class
92
111
103.7
6
6th Class
94
108
103.0
6
Total
30
907
662.9
26
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).