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
17.95
2025/26
Mainstream classes
19
2025/26
Largest class group
22
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
56
3
18.67
21
0
2007/08
120
7
17.14
21
0
2008/09
164
10
16.40
21
0
2009/10
214
12
17.83
26
0
2010/11
268
12
22.33
26
0
2011/12
315
15
21.00
24
0
2012/13
380
18
21.11
26
0
2013/14
406
19
21.37
25
0
2014/15
409
19
21.53
28
0
2015/16
405
20
20.25
26
0
2016/17
391
19
20.58
27
0
2017/18
396
19
20.84
26
0
2019/20
384
19
20.21
26
0
2020/21
374
19
19.68
25
0
2021/22
364
19
19.16
25
0
2022/23
348
19
18.32
23
0
2023/24
353
19
18.58
23
0
2024/25
346
19
18.21
23
0
2025/26
341
19
17.95
22
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2012/13: 315 in 2011/12 → 380, +65 pupils.
Biggest loss in a single year: 2022/23: 382 in 2021/22 → 366, -16 pupils.
Largest single-class increase: 5th Class in 2023/24 (44 → 52, +8).
Largest single-class decrease: 2nd Class in 2021/22 (55 → 41, -14).
Largest cohort-step gain: SI → 1st in 2025/26 (43 → 46, +3).
Largest cohort-step loss: 5th → 6th in 2022/23 (48 → 42, -6).
Overall: 56 (2006/07) → 359 (2025/26), 303.
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
43
49
45.0
6
Senior Infants
42
48
44.8
6
1st Class
40
46
43.7
6
2nd Class
40
55
45.3
6
3rd Class
40
53
45.5
6
4th Class
40
50
45.5
6
5th Class
42
52
45.3
6
6th Class
42
50
45.5
6
Total
56
422
331.6
20
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).