Divided into topics, these links house pdf versions of research studies and other articles in the field.

• Multiple Opportunities (Retakes) - O'Connor
• Multiple Opportunities (Retakes) - Wormeli
• Multiple Opportunities (Redos & Retakes Done Right) - Wormeli

• Group Grades - O'Connor
  
• Group Grading - Wormeli
  
• Group Scores - O'Connor

• Attendance - O'Connor
  
• Behavior (How to Grade for Learning) - O'Connor
  
• Cheating - O'Connor
  
• Effort, Participation and Attitude - O'Connor
  
• Grading and Motivation - Guskey
  
• Grading Behavior - Guskey
  
• Grading Behavior - O'Connor
  
• Grading Effort, Attendance and Behavior -Wormeli
  
• What's in a Grade - Scott

• Best Practice in Assessment - Zemelman
  
• Maximizing the Power of Formative Assessments - Stiggins & DuFour
  
• Formative Assessment - Heritage
  
• Formative Assessment - Brookhart
  
• The Best Value in Formative Assessment - Chappuis & Chappuis
• What a Difference a Word Makes - Stiggins & Chappuis

• Extra Credit - Wormeli
• Extra Credit - O'Connor​

• Grading Homework - O'Connor
• Grading Homework - Wormeli
• Homework - O'Connor

• Against the Zero - Reeves
• Devasting Effects of Zeros - McMillan
• Giving Zeros - Wormeli
• Grading Late Work - Wormeli
• Incomplete and Late Work - Guskey
• Late Work (How to Grade for Learning) - O'Connor
• Late Work - O'Connor
• Late Work 2 - O'Connor
• The Case Against the Zero - Reeves
• Zeros - O'Connor

• A's For Good Behavior - Tyre
• Basing Grades on Standards - O'Connor
• Grading in a SBS - Colby
• Reconcilable Differences - Tomlinson
• 7 Reasons for Standards Based Grading - Scriffiny