Some add-ons may also not work as intended. User reports show that certain popular realistic gun add-ons may be completely non-functional in the Education Edition, or may only partially work with missing sounds or models. Always check recent user comments to see if others have had success with the same version you are using.
The following mods (often called "Add-ons" in Bedrock) are known for their high-quality features and compatibility: realistic gun mod minecraft education edition