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
23.41
2025/26
Mainstream classes
32
2025/26
Largest class group
27
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
505
19
26.58
35
8
2007/08
535
20
26.75
34
8
2008/09
560
21
26.67
34
6
2009/10
585
22
26.59
33
4
2010/11
611
23
26.57
32
5
2011/12
664
24
27.67
33
7
2012/13
680
24
28.33
35
7
2013/14
713
25
28.52
34
11
2014/15
711
26
27.35
32
8
2015/16
721
26
27.73
33
11
2016/17
729
27
27.00
33
9
2017/18
747
27
27.67
33
12
2019/20
731
28
26.11
31
4
2020/21
732
28
26.14
31
4
2021/22
712
29
24.55
28
0
2022/23
731
29
25.21
28
0
2023/24
699
31
22.55
28
0
2024/25
748
32
23.38
27
0
2025/26
749
32
23.41
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1993/94: 363 in 1983/84 → 517, +154 pupils.
Biggest loss in a single year: 1995/96: 524 in 1994/95 → 490, -34 pupils.
Largest single-class increase: 4th Class in 2022/23 (77 → 104, +27).
Largest single-class decrease: 4th Class in 2021/22 (107 → 77, -30).
Largest cohort-step gain: 1st → 2nd in 2025/26 (84 → 99, +15).
Largest cohort-step loss: JI → SI in 2023/24 (81 → 78, -3).
Overall: 197 (1981/82) → 761 (2025/26), 564.
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
75
91
81.2
6
Senior Infants
77
97
84.3
6
1st Class
81
90
85.0
6
2nd Class
83
99
92.8
6
3rd Class
75
98
91.7
6
4th Class
77
107
96.7
6
5th Class
81
108
99.2
6
6th Class
81
108
99.7
6
Total
197
761
583.3
36
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).