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
23.15
2025/26
Mainstream classes
13
2025/26
Largest class group
28
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
403
15
26.87
30
2
2007/08
419
15
27.93
33
7
2008/09
449
16
28.06
33
7
2009/10
432
16
27.00
33
6
2010/11
413
16
25.81
31
3
2011/12
446
16
27.88
34
3
2012/13
439
16
27.44
32
3
2013/14
434
16
27.12
32
2
2014/15
455
16
28.44
33
6
2015/16
447
16
27.94
33
3
2016/17
430
17
25.29
34
3
2017/18
409
16
25.56
30
2
2019/20
323
14
23.07
26
0
2020/21
333
14
23.79
26
0
2021/22
338
13
26.00
30
2
2022/23
323
14
23.07
27
0
2023/24
316
14
22.57
27
0
2024/25
320
13
24.62
28
0
2025/26
301
13
23.15
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2011/12: 413 in 2010/11 → 446, +33 pupils.
Biggest loss in a single year: 2019/20: 414 in 2018/19 → 323, -91 pupils.
Largest single-class increase: 2nd Class in 2021/22 (77 → 94, +17).
Largest single-class decrease: Junior Infants in 2022/23 (86 → 69, -17).
Largest cohort-step gain: SI → 1st in 2022/23 (73 → 80, +7).
Largest cohort-step loss: 2nd → 3rd in 2022/23 (94 → 0, -94).
Overall: 594 (1974/75) → 313 (2025/26), -281.
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
69
86
77.8
6
Senior Infants
72
89
81.2
6
1st Class
70
96
84.2
6
2nd Class
72
94
83.7
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
313
644
451.5
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).