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
20.46
2025/26
Mainstream classes
13
2025/26
Largest class group
24
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
251
13
19.31
26
0
2007/08
266
14
19.00
22
0
2008/09
268
14
19.14
24
0
2009/10
284
14
20.29
25
0
2010/11
273
14
19.50
24
0
2011/12
242
14
17.29
23
0
2012/13
223
13
17.15
21
0
2013/14
233
12
19.42
24
0
2014/15
235
11
21.36
25
0
2015/16
254
12
21.17
24
0
2016/17
273
13
21.00
24
0
2017/18
281
12
23.42
27
0
2019/20
278
13
21.38
25
0
2020/21
267
13
20.54
24
0
2021/22
258
13
19.85
24
0
2022/23
261
13
20.08
23
0
2023/24
271
13
20.85
23
0
2024/25
268
13
20.62
24
0
2025/26
266
13
20.46
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1980/81: 307 in 1979/80 → 384, +77 pupils.
Biggest loss in a single year: 1993/94: 542 in 1983/84 → 318, -224 pupils.
Largest single-class increase: 6th Class in 2025/26 (64 → 83, +19).
Largest single-class decrease: 4th Class in 2025/26 (72 → 56, -16).
Largest cohort-step gain: 5th → 6th in 2025/26 (78 → 83, +5).
Largest cohort-step loss: 4th → 5th in 2022/23 (67 → 65, -2).
Overall: 307 (1979/80) → 278 (2025/26), -29.
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
0
0
0.0
1
Senior Infants
0
0
0.0
1
1st Class
0
0
0.0
1
2nd Class
0
0
0.0
1
3rd Class
54
75
64.8
6
4th Class
56
74
65.2
6
5th Class
59
78
68.8
6
6th Class
60
83
68.3
6
Total
223
542
295.7
38
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).