Download the Mac Osx Disk Image Vmware-View-Open-Client from the list and install it.
Download the Microsoft Remote Desktop Client 2 also and install it.
Once those items are installed open the new installed vmware-view-open-client software on your computer and type in the https://mypc.duluth.k12.mn.us to connect. If it requires a port type https://mypc.duluth.k12.mn.us:443
Don't use Safari or Internet Explorer.