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
20.88
2025/26
Mainstream classes
16
2025/26
Largest class group
26
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
531
24
22.12
27
0
2007/08
498
24
20.75
27
0
2008/09
487
23
21.17
28
0
2009/10
459
23
19.96
23
0
2010/11
448
22
20.36
27
0
2011/12
454
22
20.64
27
0
2012/13
416
21
19.81
28
0
2013/14
391
19
20.58
26
0
2014/15
387
19
20.37
26
0
2015/16
365
19
19.21
26
0
2016/17
352
18
19.56
26
0
2017/18
336
16
21.00
27
0
2019/20
322
16
20.12
26
0
2020/21
324
16
20.25
26
0
2021/22
330
16
20.62
26
0
2022/23
316
16
19.75
24
0
2023/24
312
16
19.50
22
0
2024/25
311
16
19.44
24
0
2025/26
334
16
20.88
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 388 in 1983/84 → 742, +354 pupils.
Biggest loss in a single year: 1999/00: 691 in 1998/99 → 645, -46 pupils.
Largest single-class increase: Junior Infants in 2025/26 (25 → 45, +20).
Largest single-class decrease: 2nd Class in 2022/23 (45 → 29, -16).
Largest cohort-step gain: 4th → 5th in 2025/26 (33 → 40, +7).
Largest cohort-step loss: 1st → 2nd in 2022/23 (32 → 29, -3).
Overall: 222 (1982/83) → 334 (2025/26), 112.
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
25
45
37.3
6
Senior Infants
30
46
37.3
6
1st Class
32
47
39.7
6
2nd Class
29
45
39.3
6
3rd Class
31
45
39.5
6
4th Class
33
46
40.7
6
5th Class
37
48
43.3
6
6th Class
38
51
44.0
6
Total
222
742
480.6
35
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).