BPI Building Science Principles (BSP) Training is comprised of 8 hours of on-demand instruction covering all of the chapters and topics in the BPI Building Science Principles Guide. BPI Building Science Principles Training is the foundation course to all higher tier BPI Certifications. At the end of your training you will take a 100Q training practice exam in preparation for your Building Science Principles Certificate of Knowledge exam (included in the Building Science Principles Training and Testing Package).