# Knowing When to Teach: Learning from Teachable Prefixes in Multilingual Reasoning Distillation > Source: > Published: 2026-11-09 11:30:08+00:00 On-Policy Self-Distillation (OPSD) improves reasoning by training a student on its own reasoning, using the same model conditioned on reference solutions as a teacher. Applying OPSD to multilingual reasoning requires the teacher to provide useful feedback across languages, even when the student make