The Book Schroth Therapy - Advancements in conservative Scoliosis Care is now available open access:
https://www.researchgate.net/publication/360290969_Schroth_Therapy_Advancements_in_Conservative_Scoliosis_Treatment_3rd_edition_Special_Schroth_Best_Practice_Academy_Edition#fullTextFileContent.

Direct access to the PDF: 2022_BP_2824C---eBook

Link to the publisher: https://www.bookpi.org/bookstore/product/schroth-therapy-advancements-in-conservative-scoliosis-treatment-3rd-edition/.

This book is the official manual for the Schroth Best Practice (SBP) basic course.