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
23.60
2025/26
Mainstream classes
15
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
327
11
29.73
35
7
2007/08
360
13
27.69
34
6
2008/09
364
13
28.00
32
4
2009/10
351
13
27.00
32
2
2010/11
359
13
27.62
32
5
2011/12
361
13
27.77
32
4
2012/13
365
13
28.08
32
4
2013/14
396
14
28.29
32
5
2014/15
414
15
27.60
32
4
2015/16
421
15
28.07
31
6
2016/17
423
16
26.44
31
3
2017/18
423
16
26.44
30
4
2019/20
408
16
25.50
31
3
2020/21
407
16
25.44
31
1
2021/22
396
16
24.75
31
3
2022/23
393
16
24.56
31
2
2023/24
387
16
24.19
29
0
2024/25
353
16
22.06
30
1
2025/26
354
15
23.60
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 327 in 2006/07 → 360, +33 pupils.
Biggest loss in a single year: 2024/25: 405 in 2023/24 → 370, -35 pupils.
Largest single-class increase: 1st Class in 2021/22 (36 → 57, +21).
Largest single-class decrease: Junior Infants in 2024/25 (45 → 27, -18).
Largest cohort-step gain: 4th → 5th in 2025/26 (58 → 63, +5).
Largest cohort-step loss: 1st → 2nd in 2024/25 (48 → 42, -6).
Overall: 276 (2003/04) → 377 (2025/26), 101.
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
27
51
43.5
6
Senior Infants
28
58
45.2
6
1st Class
36
57
47.2
6
2nd Class
39
58
47.8
6
3rd Class
39
59
48.0
6
4th Class
41
60
50.8
6
5th Class
43
63
54.0
6
6th Class
44
62
53.3
6
Total
276
429
377.8
23
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).