For the District Calendar copy the following URL:
https://www.google.com/calendar/ical/tvs.k12.oh.us_mmmn12g018kuoiabhgg8ubbrig%40group.calendar.google.com/public/basic.ics
For the Athletic Games Calendar copy the following URL:
Additional steps for Android:
Once you add the iCalendar Feed to your Google Calendar you are then able to sync to your Android device. You must have your Google account calendar sync enabled, then open your calendar app and enable the new calendar.