There are certain requirements to be eligible for KCET 2020 like candidates should have studied and passed from a recognised institution situated in Karnataka. The academic study from a state institute should be for a minimum period of 7 years, starting from 1st standard to 12th standard as on July 1 of the exam year. Also, should have appeared/passed either 10th or12th standard exam from Karnataka. If you don't meet the criteria, you'll no longer eligible for KCET exam.

https://engineering.careers360.com/articles/kcet-eligibility-criteria