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
18.04
2025/26
Mainstream classes
24
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
447
19
23.53
29
0
2007/08
444
19
23.37
28
0
2008/09
453
19
23.84
30
1
2009/10
447
19
23.53
29
0
2010/11
434
19
22.84
28
0
2011/12
420
18
23.33
28
0
2012/13
412
18
22.89
28
0
2013/14
380
17
22.35
30
2
2014/15
391
17
23.00
29
0
2015/16
397
17
23.35
29
0
2016/17
405
17
23.82
29
0
2017/18
400
20
20.00
28
0
2019/20
401
21
19.10
29
0
2020/21
401
22
18.23
25
0
2021/22
411
22
18.68
27
0
2022/23
425
23
18.48
26
0
2023/24
431
23
18.74
27
0
2024/25
426
24
17.75
22
0
2025/26
433
24
18.04
22
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2018/19: 414 in 2017/18 → 430, +16 pupils.
Biggest loss in a single year: 1998/99: 553 in 1997/98 → 516, -37 pupils.
Largest single-class increase: 6th Class in 2021/22 (46 → 60, +14).
Largest single-class decrease: Senior Infants in 2023/24 (55 → 41, -14).
Largest cohort-step gain: 3rd → 4th in 2022/23 (51 → 64, +13).
Largest cohort-step loss: SI → 1st in 2023/24 (55 → 52, -3).
Overall: 591 (1993/94) → 446 (2025/26), -145.
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
41
52
46.2
6
Senior Infants
41
55
46.8
6
1st Class
45
53
49.7
6
2nd Class
49
60
52.5
6
3rd Class
51
61
56.8
6
4th Class
47
67
58.5
6
5th Class
49
64
57.5
6
6th Class
46
64
56.7
6
Total
394
602
464.3
33
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).