Are Internationals eligible for in state tuition?

Hey! So i read on university of Houston that if you have a pending application of i-485 then you May be eligible for in state tuition.

Generally, students holding F-1 visas are not eligible to be considered Texas residents for tuition purposes. Due to the nature of the F-1 visa, F-1 visa holders are not eligible to domicile (see list below) and do not qualify for a resident classification. However, if a student with an F-1 visa ALSO has an application for permanent residence (1-485 application) pending with United States Citizenship and Immigration Services (USCIS) the student may be eligible to qualify for in state residency. The general requirements for establishing residency will apply.

Are there any requirements you need to meet to apply for i-485? As i understood it you dont even need to get it accepted as you Only need it to be pending.
Can you take advantage of this in all of the colleges in USA or Only chosen one?

Every school has its only policy. Even public schools within the same state can have different policies. Check w each one individually.

Filing form I-485 (Application to Register Permanent Resident Status) is the very last step in the process of obtaining a green card. Before you can file it, you need to establish eligibility for permanent resident status (e.g. using forms I-130 (Petition for Alien Relative) or I-140 (Immigrant Petition for Alien Worker)) and wait for an immigrant visa number to become available for you.

If you submit application I-485 without supporting documents that establish your eligibility for a green card, the application will be returned to you as incomplete. You would need to submit a complete application in order to get the receipt that qualifies you as having a “pending I-485 application.”