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
24.14
2025/26
Mainstream classes
14
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
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
360
13
27.69
31
5
2007/08
367
13
28.23
33
6
2008/09
367
14
26.21
31
3
2009/10
356
13
27.38
32
2
2010/11
343
13
26.38
32
3
2011/12
346
13
26.62
29
0
2012/13
340
13
26.15
30
1
2013/14
340
13
26.15
32
3
2014/15
348
13
26.77
30
1
2015/16
339
13
26.08
30
2
2016/17
348
13
26.77
31
5
2017/18
360
13
27.69
31
4
2019/20
350
14
25.00
31
2
2020/21
349
13
26.85
31
4
2021/22
341
14
24.36
30
1
2022/23
343
14
24.50
30
3
2023/24
342
14
24.43
31
2
2024/25
339
14
24.21
30
1
2025/26
338
14
24.14
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 365 in 1974/75 → 423, +58 pupils.
Biggest loss in a single year: 1983/84: 448 in 1982/83 → 397, -51 pupils.
Largest single-class increase: 4th Class in 2021/22 (81 → 87, +6).
Largest single-class decrease: 5th Class in 2021/22 (92 → 82, -10).
Largest cohort-step gain: 5th → 6th in 2024/25 (85 → 90, +5).
Largest cohort-step loss: 3rd → 4th in 2023/24 (90 → 86, -4).
Overall: 365 (1974/75) → 338 (2025/26), -27.
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
80
90
85.2
6
4th Class
81
87
84.2
6
5th Class
82
92
85.7
6
6th Class
83
90
87.0
6
Total
327
508
376.7
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).