Part 4

Power Platform Custom Connector
(I always build my stuff in Solutions, click here for more information about PowerPlatform Solutions)

1. Create and Name the Custom Connector

2. Scheme = HTTPS

3. Host is 

Part 3

Create a Bearer Token to make API calls using PostMan 

(You should have your newly installed plugin available to copy and paste Client ID and Client Secret)

Part 2

Install the Plugin in PowerSchool

1. Log in to your PowerSchool Admin account 
2. Select System under Setup in the main menu 
3. Select System Settings under the Server section 
4. Select Plugin Management Configuration 
5. Click Install 
6. Select the plugin file (XML) you just created to install 
7. Click Install 

Part 3>

Part One

Create the Plugin for PowerSchool for Office
(Thank You BlayneC )