UPRT Course for Flight Schools. David’s guide will lead you through the requirements and available training material here. EASA is leading the world with their on-aircraft advanced UPRT requirements. https://www.easa.europa.eu/the-agency/faqs/upset-prevention-and-recovery-training
Before you go any further, all pilots should see this video Startle and Surprise: Upset Recovery Produced in conjunction with the ‘Ultimate High’ UPRT Academy at Goodwood in England, Owen Sims explains the startle effect, how it differs from surprise, what we might do about it, and how on-aircraft training is an important part of startle management.
What is Upset Prevention and Recovery Training? It is not aerobatics as Patty explains here From Skeptic To Convert
There is much information on basic UPRT for pilots from the FAA at https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/airplane_handbook/media/06_afh_ch4.pdf
The Ozaeros Syllabus for a short Upset Recovery Introductory Training course is provided below:
Upset Recovery Training Material
Unusual Attitude Recovery Training is generally provided as a tailored course based on this syllabus below: