We do not have a download file for the latest version (3.1.0.8530), but you can try downloading it from the developer's site
Download version 3.0.0.8081 from Software Informer
Scanned by 7 antivirus programs on Oct 3, 2018.
The file is clean, see the report.
Version: 3.0.0.8081 (x86)
Date update: Apr 29, 2012
File name: wizteach_3.0.0.8081_full.exe
Size: 508 MB