This document outlines 15 fixes for improving grading practices presented by Ken O'Connor. It discusses issues with current grading such as including non-achievement factors, using low quality assessments, and inappropriate scoring methods. It then presents 15 strategies for fixing broken grading systems, such as only including achievement in grades, organizing evidence by standards rather than assessment type, using clear performance standards, and involving students in assessment and grading. For each fix, the presenter prompts attendees to consider pros, cons, current practices, goals, and steps for implementation. The overall document provides research-based strategies for making grades more accurate, consistent, meaningful and supportive of learning.