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
23.65
2025/26
Mainstream classes
26
2025/26
Largest class group
28
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
423
16
26.44
36
3
2007/08
443
17
26.06
33
2
2008/09
454
18
25.22
33
2
2009/10
448
17
26.35
33
4
2010/11
462
17
27.18
33
3
2011/12
487
17
28.65
35
6
2012/13
494
18
27.44
35
6
2013/14
519
19
27.32
35
5
2014/15
518
19
27.26
35
6
2015/16
534
20
26.70
32
4
2016/17
569
21
27.10
33
4
2017/18
597
22
27.14
33
6
2019/20
613
23
26.65
32
2
2020/21
647
24
26.96
30
2
2021/22
626
26
24.08
28
0
2022/23
631
26
24.27
28
0
2023/24
594
26
22.85
28
0
2024/25
627
26
24.12
28
0
2025/26
615
26
23.65
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 433 in 1974/75 → 499, +66 pupils.
Biggest loss in a single year: 1976/77: 499 in 1975/76 → 417, -82 pupils.
Largest single-class increase: Junior Infants in 2024/25 (59 → 84, +25).
Largest single-class decrease: 3rd Class in 2025/26 (82 → 63, -19).
Largest cohort-step gain: 4th → 5th in 2024/25 (85 → 92, +7).
Largest cohort-step loss: 2nd → 3rd in 2025/26 (68 → 63, -5).
Overall: 433 (1974/75) → 621 (2025/26), 188.
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
59
84
74.7
6
Senior Infants
64
85
74.8
6
1st Class
65
83
74.0
6
2nd Class
68
84
76.3
6
3rd Class
63
83
76.7
6
4th Class
77
88
82.8
6
5th Class
73
92
82.0
6
6th Class
73
95
83.0
6
Total
392
653
498.5
43
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).