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
21.27
2025/26
Mainstream classes
15
2025/26
Largest class group
26
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
511
18
28.39
32
9
2007/08
551
20
27.55
32
4
2008/09
609
22
27.68
31
4
2009/10
620
22
28.18
31
8
2010/11
599
22
27.23
31
4
2011/12
571
22
25.95
28
0
2012/13
486
21
23.14
26
0
2013/14
450
18
25.00
30
1
2014/15
439
16
27.44
30
1
2015/16
425
16
26.56
28
0
2016/17
468
17
27.53
29
0
2017/18
466
17
27.41
29
0
2019/20
495
18
27.50
30
2
2020/21
480
19
25.26
30
3
2021/22
470
19
24.74
27
0
2022/23
448
19
23.58
27
0
2023/24
405
18
22.50
25
0
2024/25
360
17
21.18
26
0
2025/26
319
15
21.27
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2008/09: 551 in 2007/08 → 609, +58 pupils.
Biggest loss in a single year: 2012/13: 571 in 2011/12 → 486, -85 pupils.
Largest single-class increase: 6th Class in 2021/22 (117 → 126, +9).
Largest single-class decrease: 5th Class in 2025/26 (106 → 74, -32).
Largest cohort-step gain: 3rd → 4th in 2023/24 (101 → 105, +4).
Largest cohort-step loss: 5th → 6th in 2023/24 (122 → 118, -4).
Overall: 454 (2005/06) → 319 (2025/26), -135.
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
0
0
0.0
1
Senior Infants
0
0
0.0
1
1st Class
0
0
0.0
1
2nd Class
0
0
0.0
1
3rd Class
66
117
88.7
6
4th Class
71
120
99.2
6
5th Class
74
127
109.7
6
6th Class
108
126
116.2
6
Total
319
620
481.4
21
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).