IO Assessment has different bubble sheets for different types of scanning. All schools can use IO Scan, which is included in this article. If you are using Gradecam to scan, please see this article.
You can download IO Scan here.
These articles will assist your use of IO Scan
Scanning - IO Scan - Detailed User Manual
Scanning - IO Scan - Installation Guide
Scanning – IO Scan - Setting up Scan to Network option
Scanning - IO Scan - User's Guide - Basic
Scanning - IO Scan -Recommended Scanners