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
19.00
2025/26
Mainstream classes
20
2025/26
Largest class group
23
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
240
11
21.82
27
0
2007/08
227
12
18.92
23
0
2008/09
222
12
18.50
22
0
2009/10
229
13
17.62
21
0
2010/11
214
12
17.83
24
0
2011/12
221
12
18.42
22
0
2012/13
224
12
18.67
24
0
2013/14
228
12
19.00
24
0
2014/15
236
12
19.67
25
0
2015/16
252
12
21.00
24
0
2016/17
277
13
21.31
25
0
2017/18
311
14
22.21
26
0
2019/20
362
17
21.29
26
0
2020/21
356
17
20.94
27
0
2021/22
364
17
21.41
26
0
2022/23
380
18
21.11
26
0
2023/24
378
20
18.90
23
0
2024/25
377
20
18.85
25
0
2025/26
380
20
19.00
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2017/18: 277 in 2016/17 → 311, +34 pupils.
Biggest loss in a single year: 1980/81: 599 in 1979/80 → 532, -67 pupils.
Largest single-class increase: 5th Class in 2021/22 (38 → 51, +13).
Largest single-class decrease: 5th Class in 2022/23 (51 → 41, -10).
Largest cohort-step gain: 3rd → 4th in 2023/24 (50 → 55, +5).
Largest cohort-step loss: 5th → 6th in 2024/25 (53 → 48, -5).
Overall: 599 (1979/80) → 380 (2025/26), -219.
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
37
55
45.0
6
Senior Infants
40
54
45.7
6
1st Class
40
53
46.5
6
2nd Class
39
53
47.0
6
3rd Class
39
51
45.7
6
4th Class
40
55
47.7
6
5th Class
38
53
47.7
6
6th Class
39
56
47.3
6
Total
221
599
326.6
37
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).