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
21.23
2025/26
Mainstream classes
13
2025/26
Largest class group
29
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
426
15
28.40
31
2
2007/08
430
16
26.88
31
4
2008/09
412
16
25.75
30
3
2009/10
412
15
27.47
32
6
2010/11
417
15
27.80
32
7
2011/12
399
15
26.60
31
2
2012/13
364
15
24.27
29
0
2013/14
361
14
25.79
29
0
2014/15
370
14
26.43
29
0
2015/16
367
14
26.21
30
1
2016/17
408
15
27.20
30
1
2017/18
440
16
27.50
31
3
2019/20
449
16
28.06
30
3
2020/21
420
16
26.25
29
0
2021/22
366
15
24.40
28
0
2022/23
341
15
22.73
27
0
2023/24
325
15
21.67
27
0
2024/25
295
14
21.07
29
0
2025/26
276
13
21.23
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2016/17: 367 in 2015/16 → 408, +41 pupils.
Biggest loss in a single year: 2021/22: 420 in 2020/21 → 372, -48 pupils.
Largest single-class increase: 6th Class in 2023/24 (72 → 77, +5).
Largest single-class decrease: 6th Class in 2021/22 (113 → 79, -34).
Largest cohort-step gain: 3rd → 4th in 2025/26 (56 → 60, +4).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (59 → 56, -3).
Overall: 640 (1974/75) → 290 (2025/26), -350.
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
53
70
59.3
6
3rd Class
55
80
63.5
6
4th Class
56
79
67.2
6
5th Class
58
82
70.5
6
6th Class
62
113
79.0
6
Total
290
654
446.2
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).