Here are the links for the TEA Guidance for 2020 Graduation.
https://tea.texas.gov/sites/default/files/graduation_ceremonies_5.5.pdf
https://tea.texas.gov/sites/default/files/guidance_for_2020_seniors_updated_5.5.pdf
The first is the Graduation Ceremonies Guidance and the second is the Guidance for 2020 Seniors.