Bob is right about the current system. If you wait about a month, we will be selling a DVR compatible receiver with a card slot to accept the Bob Jones subscription card. Simply install the system for Glorystar and add a 4x1 DiSEqC switch and a second dish (or rig a mount for a third LNBF onto the single dish) for Galaxy 26 then scan the bird. Insert your subscription card and connect a USB hard drive to record the classes.
You will want to turn off the OTA auto updating feature so the receiver will not automatically manage your satellites and channel list. When you are no longer home schooling or during summer breaks, activate the OTA updating for all new firmware, features and channel lists to be updated on the receiver.