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
24.29
2025/26
Mainstream classes
17
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
500
18
27.78
33
7
2007/08
568
21
27.05
32
7
2008/09
616
23
26.78
33
4
2009/10
647
23
28.13
34
6
2010/11
674
24
28.08
33
7
2011/12
717
26
27.58
32
4
2012/13
761
28
27.18
32
5
2013/14
794
29
27.38
32
4
2014/15
834
30
27.80
32
8
2015/16
847
30
28.23
32
7
2016/17
847
31
27.32
32
5
2017/18
879
32
27.47
32
4
2019/20
457
16
28.56
32
5
2020/21
460
16
28.75
32
5
2021/22
452
17
26.59
30
1
2022/23
441
17
25.94
30
2
2023/24
436
17
25.65
31
4
2024/25
416
17
24.47
29
0
2025/26
413
17
24.29
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 500 in 2006/07 → 568, +68 pupils.
Biggest loss in a single year: 2018/19: 879 in 2017/18 → 455, -424 pupils.
Largest single-class increase: 6th Class in 2021/22 (110 → 124, +14).
Largest single-class decrease: 5th Class in 2025/26 (115 → 93, -22).
Largest cohort-step gain: 5th → 6th in 2025/26 (115 → 120, +5).
Largest cohort-step loss: 3rd → 4th in 2024/25 (98 → 95, -3).
Overall: 224 (1974/75) → 413 (2025/26), 189.
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
98
115
104.7
6
4th Class
95
115
105.7
6
5th Class
93
123
110.7
6
6th Class
108
124
115.3
6
Total
224
879
471.0
43
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).