It's easy to retrieve data based on how it compares to a value, such as all grades equal to or lower than 70. The picture shows you how to do this. Open your query in Design view, and in the Criteria cell, enter a comparison operator and a value. For example:
Greater than 40.
Greater than or equal to 40.
Less than or equal to 40.
Not equal to 40.
You'll use comparison operators in the practice, and the Quick Reference Card has a complete list.