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
15.90
2025/26
Mainstream classes
10
2025/26
Largest class group
20
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
170
9
18.89
23
0
2007/08
154
9
17.11
21
0
2008/09
147
9
16.33
20
0
2009/10
160
8
20.00
22
0
2010/11
147
9
16.33
20
0
2011/12
177
11
16.09
20
0
2012/13
180
9
20.00
26
0
2013/14
171
9
19.00
25
0
2014/15
188
9
20.89
24
0
2015/16
196
10
19.60
23
0
2016/17
204
10
20.40
25
0
2017/18
191
11
17.36
23
0
2019/20
200
11
18.18
21
0
2020/21
190
11
17.27
20
0
2021/22
194
11
17.64
21
0
2022/23
188
11
17.09
22
0
2023/24
179
11
16.27
20
0
2024/25
165
11
15.00
20
0
2025/26
159
10
15.90
20
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1977/78: 363 in 1976/77 → 519, +156 pupils.
Biggest loss in a single year: 1993/94: 799 in 1982/83 → 371, -428 pupils.
Largest single-class increase: 2nd Class in 2021/22 (34 → 59, +25).
Largest single-class decrease: 1st Class in 2021/22 (57 → 41, -16).
Largest cohort-step gain: JI → SI in 2022/23 (41 → 49, +8).
Largest cohort-step loss: 2nd → 3rd in 2022/23 (59 → 0, -59).
Overall: 325 (1974/75) → 165 (2025/26), -160.
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
40
54
43.8
6
Senior Infants
36
53
43.7
6
1st Class
39
57
46.3
6
2nd Class
34
59
46.3
6
3rd Class
0
0
0.0
1
4th Class
0
0
0.0
1
5th Class
0
0
0.0
1
6th Class
0
0
0.0
1
Total
165
799
288.0
42
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).