A wnaiff y Gweinidog ddarparu tystiolaeth o'r cysylltiad achlysurol rhwng gwyliau ysgol byrrach a chalendr ysgol mwy cytbwys, a gwell canlyniadau addysgol?
Wedi'i ateb gan Gweinidog y Gymraeg ac Addysg | Wedi'i ateb ar 02/02/2024
This is set out as part of the Consultation on the School Year document. In addition key research commissioned directly by the Welsh Government is published on the Welsh Government website.