The two crossword solutions for the term A or B- are GRADE, with 5 letters, and BLOODTYPE, with 9 letters. GRADE is a term used to describe the level of achievement in an academic setting, such as elementary school, high school, college, or university. It is usually based on a student's performance in tests, assignments, and other activities. BLOODTYPE is a classification system used to identify the type of blood a person has. It is based on the presence or absence of certain antigens on the surface of red blood cells.