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
20.92
2025/26
Mainstream classes
13
2025/26
Largest class group
24
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
419
17
24.65
28
0
2007/08
451
19
23.74
27
0
2008/09
512
21
24.38
28
0
2009/10
556
21
26.48
30
3
2010/11
574
22
26.09
32
2
2011/12
600
22
27.27
34
5
2012/13
621
24
25.88
29
0
2013/14
600
24
25.00
27
0
2014/15
549
24
22.88
27
0
2015/16
516
23
22.43
26
0
2016/17
508
22
23.09
30
4
2017/18
540
20
27.00
31
5
2019/20
504
20
25.20
30
4
2020/21
435
19
22.89
27
0
2021/22
390
17
22.94
26
0
2022/23
354
16
22.12
26
0
2023/24
343
14
24.50
28
0
2024/25
306
14
21.86
26
0
2025/26
272
13
20.92
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2006/07: 369 in 2005/06 → 454, +85 pupils.
Biggest loss in a single year: 2020/21: 504 in 2019/20 → 435, -69 pupils.
Largest single-class increase: 5th Class in 2025/26 (75 → 85, +10).
Largest single-class decrease: 4th Class in 2025/26 (84 → 61, -23).
Largest cohort-step gain: 5th → 6th in 2023/24 (93 → 103, +10).
Largest cohort-step loss: 5th → 6th in 2025/26 (75 → 70, -5).
Overall: 290 (2004/05) → 274 (2025/26), -16.
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
58
83
72.8
6
4th Class
61
107
81.5
6
5th Class
75
123
94.5
6
6th Class
70
125
101.5
6
Total
274
630
475.1
22
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).