Why do some students recieve admission decisions earlier without doing early action/ decision?

For example, UCI and some CAL STATES are sending out admission decisions earlier to some students. In which order do they look at the application? Students with high GPA are looked at first?

Thank you

If you live in the priority area for the CSU’s, you should receive admission decision early. Also, frequently if you have a high GPA you will receive notices early.

If you have a high eligibility index, which is your gpa + sat or act (formula on CSU website) you get your acceptance sooner, I believe.

Most CSUs’ admission processes are rather simple to do with a computer program, so they can issue decisions quickly.