What is the correct grammar for following sentence All staff uses whole group instruction?

The correct grammar depends on whether you're referring to the staff as a collective group or individuals.

Here are the two options:

* "All staff uses whole group instruction." (This is correct if you're considering the staff as a single, unified entity.)

* "All staff use whole group instruction." (This is correct if you're referring to each individual member of the staff.)

The difference lies in whether "staff" is singular or plural.

In general, it's safer to use the plural "use" unless the context clearly indicates that the staff is acting as a single unit.