Grade 6 Upgrade - Casa Grande Saturday, December 15, 2018 9:00 AM 2:00 PM 09:00 14:00 Grande Sports World 12684 West Gila Bend Highway Casa Grande, AZ, 85193 United States (map) Google Calendar ICS For existing Grade 7 referees wishing to upgrade to Grade 6.Exact times and additional details will be available soon.