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
21.75
2025/26
Mainstream classes
20
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
519
19
27.32
30
2
2007/08
525
20
26.25
30
1
2008/09
514
21
24.48
28
0
2009/10
526
20
26.30
30
1
2010/11
532
20
26.60
29
0
2011/12
542
20
27.10
29
0
2012/13
541
20
27.05
29
0
2013/14
552
20
27.60
28
0
2014/15
562
20
28.10
30
1
2015/16
563
20
28.15
29
0
2016/17
546
20
27.30
30
1
2017/18
530
20
26.50
29
0
2019/20
493
20
24.65
27
0
2020/21
455
19
23.95
29
0
2021/22
461
18
25.61
32
4
2022/23
488
20
24.40
29
0
2023/24
448
20
22.40
25
0
2024/25
450
20
22.50
25
0
2025/26
435
20
21.75
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1976/77: 430 in 1975/76 → 638, +208 pupils.
Biggest loss in a single year: 1993/94: 894 in 1983/84 → 549, -345 pupils.
Largest single-class increase: Senior Infants in 2022/23 (99 → 128, +29).
Largest single-class decrease: Senior Infants in 2021/22 (121 → 99, -22).
Largest cohort-step gain: SI → 1st in 2025/26 (102 → 121, +19).
Largest cohort-step loss: 2nd → 3rd in 2023/24 (130 → 0, -130).
Overall: 430 (1975/76) → 449 (2025/26), 19.
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
96
118
106.5
6
Senior Infants
99
128
113.3
6
1st Class
115
121
118.5
6
2nd Class
112
130
120.2
6
3rd Class
0
0
0.0
1
4th Class
0
0
0.0
1
5th Class
0
0
0.0
1
6th Class
0
0
0.0
1
Total
362
894
531.6
42
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).