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
22.05
2025/26
Mainstream classes
20
2025/26
Largest class group
32
2025/26
Classes with 30+ pupils
2
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
406
16
25.38
29
0
2007/08
418
17
24.59
30
1
2008/09
440
17
25.88
30
1
2009/10
459
17
27.00
31
4
2010/11
426
17
25.06
29
0
2011/12
477
18
26.50
31
2
2012/13
509
18
28.28
32
6
2013/14
536
19
28.21
33
9
2014/15
559
20
27.95
33
7
2015/16
574
21
27.33
33
8
2016/17
556
22
25.27
34
4
2017/18
560
21
26.67
34
4
2019/20
535
22
24.32
32
2
2020/21
543
21
25.86
29
0
2021/22
495
22
22.50
26
0
2022/23
510
21
24.29
30
1
2023/24
522
21
24.86
33
2
2024/25
478
21
22.76
29
0
2025/26
441
20
22.05
32
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1994/95: 184 in 1993/94 → 261, +77 pupils.
Biggest loss in a single year: 1993/94: 236 in 1982/83 → 184, -52 pupils.
Largest single-class increase: Junior Infants in 2023/24 (50 → 68, +18).
Largest single-class decrease: Junior Infants in 2024/25 (68 → 36, -32).
Largest cohort-step gain: JI → SI in 2022/23 (48 → 56, +8).
Largest cohort-step loss: JI → SI in 2021/22 (60 → 55, -5).
Overall: 280 (1975/76) → 470 (2025/26), 190.
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
36
68
51.7
6
Senior Infants
32
64
53.8
6
1st Class
57
68
60.7
6
2nd Class
58
73
62.7
6
3rd Class
55
71
63.5
6
4th Class
63
78
70.3
6
5th Class
64
81
73.7
6
6th Class
67
82
77.0
6
Total
184
581
425.5
41
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).