Class-size profile
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.
Mainstream classes
23,718
Classes with 30+ pupils
1,251
Schools with class 30+
742
Latest class-size year: 2025/26. Mainstream class pupils: 520,482.
By Irish classification
Use this to separate schools where all, some, or no subjects are recorded as being taught through Irish.
By Gaeltacht status
Compare schools in Gaeltacht and non-Gaeltacht areas.
Irish classification and Gaeltacht status
Drill into combinations such as all subjects through Irish in Gaeltacht or non-Gaeltacht areas.