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
17.50
2025/26
Mainstream classes
12
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
258
12
21.50
29
0
2007/08
272
14
19.43
26
0
2008/09
276
13
21.23
33
1
2009/10
252
14
18.00
27
0
2010/11
262
12
21.83
28
0
2011/12
291
13
22.38
29
0
2012/13
291
14
20.79
29
0
2013/14
285
14
20.36
28
0
2014/15
291
14
20.79
27
0
2015/16
293
14
20.93
27
0
2016/17
286
14
20.43
28
0
2017/18
322
15
21.47
30
1
2019/20
268
14
19.14
22
0
2020/21
258
13
19.85
29
0
2021/22
249
13
19.15
28
0
2022/23
234
13
18.00
23
0
2023/24
213
13
16.38
24
0
2024/25
207
12
17.25
26
0
2025/26
210
12
17.50
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2017/18: 293 in 2016/17 → 329, +36 pupils.
Biggest loss in a single year: 1979/80: 347 in 1978/79 → 296, -51 pupils.
Largest single-class increase: 4th Class in 2022/23 (21 → 39, +18).
Largest single-class decrease: 3rd Class in 2022/23 (37 → 22, -15).
Largest cohort-step gain: JI → SI in 2025/26 (25 → 38, +13).
Largest cohort-step loss: 1st → 2nd in 2023/24 (31 → 15, -16).
Overall: 454 (1974/75) → 223 (2025/26), -231.
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
38
32.7
6
Senior Infants
31
39
35.3
6
1st Class
28
46
35.5
6
2nd Class
15
38
23.0
6
3rd Class
15
37
22.3
6
4th Class
15
39
25.2
6
5th Class
21
38
28.3
6
6th Class
23
38
28.3
6
Total
182
454
277.4
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).