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
25.18
2025/26
Mainstream classes
11
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
3
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
264
10
26.40
29
0
2007/08
274
10
27.40
30
1
2008/09
284
11
25.82
29
0
2009/10
317
12
26.42
32
1
2010/11
297
12
24.75
31
2
2011/12
313
12
26.08
32
2
2012/13
300
12
25.00
32
3
2013/14
327
12
27.25
31
3
2014/15
311
12
25.92
31
3
2015/16
307
12
25.58
31
4
2016/17
313
12
26.08
31
4
2017/18
300
12
25.00
30
4
2019/20
296
12
24.67
30
2
2020/21
290
12
24.17
31
1
2021/22
269
12
22.42
31
2
2022/23
262
11
23.82
33
3
2023/24
273
11
24.82
31
2
2024/25
286
11
26.00
32
3
2025/26
277
11
25.18
31
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1978/79: 475 in 1977/78 → 556, +81 pupils.
Biggest loss in a single year: 1993/94: 550 in 1983/84 → 400, -150 pupils.
Largest single-class increase: 6th Class in 2024/25 (26 → 53, +27).
Largest single-class decrease: 5th Class in 2021/22 (45 → 23, -22).
Largest cohort-step gain: JI → SI in 2023/24 (36 → 41, +5).
Largest cohort-step loss: 1st → 2nd in 2023/24 (31 → 29, -2).
Overall: 442 (1976/77) → 289 (2025/26), -153.
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
25
47
33.0
6
Senior Infants
26
41
31.3
6
1st Class
28
46
34.8
6
2nd Class
29
48
38.5
6
3rd Class
24
48
35.0
6
4th Class
25
47
32.0
6
5th Class
23
51
34.7
6
6th Class
24
55
38.8
6
Total
242
577
340.7
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).