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
21.25
2025/26
Mainstream classes
12
2025/26
Largest class group
29
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
571
20
28.55
32
8
2007/08
620
22
28.18
34
10
2008/09
626
23
27.22
35
8
2009/10
622
22
28.27
37
10
2010/11
591
22
26.86
33
7
2011/12
645
23
28.04
35
9
2012/13
666
23
28.96
34
12
2013/14
685
24
28.54
34
7
2014/15
696
25
27.84
34
7
2015/16
614
24
25.58
34
5
2016/17
567
23
24.65
33
4
2017/18
523
22
23.77
31
1
2019/20
425
19
22.37
30
1
2020/21
381
17
22.41
34
1
2021/22
338
16
21.12
29
0
2022/23
316
15
21.07
25
0
2023/24
272
14
19.43
29
0
2024/25
252
13
19.38
32
1
2025/26
255
12
21.25
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 571 in 2006/07 → 620, +49 pupils.
Biggest loss in a single year: 1993/94: 777 in 1982/83 → 539, -238 pupils.
Largest single-class increase: 4th Class in 2025/26 (25 → 41, +16).
Largest single-class decrease: Junior Infants in 2023/24 (56 → 36, -20).
Largest cohort-step gain: JI → SI in 2025/26 (39 → 51, +12).
Largest cohort-step loss: SI → 1st in 2021/22 (59 → 30, -29).
Overall: 727 (1975/76) → 291 (2025/26), -436.
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
56
46.2
6
Senior Infants
37
59
49.7
6
1st Class
27
34
29.8
6
2nd Class
24
34
29.0
6
3rd Class
27
42
31.7
6
4th Class
25
48
35.5
6
5th Class
27
58
39.7
6
6th Class
30
65
47.0
6
Total
288
814
570.8
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).