For a PI in college you need to provide some of the introductory details like your name, what school and board you have studied in, what was your subject combination and your favorite subject. Use this progression in order to introduce yourself more professionally.

For example:

My name is XYZ. I have completed by 10+2 from PQRS school which is affiliated under ABCD board. I have genuine interest in ____________stream and thus I have chosen this __________________________ subjects for my 10+2. Among all this subject I am most interested in _________subject.

Also try to mention the subject which you are applying for as your interested subject. For example, if you appear for BSc Physics then you should say that I am interested in Physics or I am interested in  Mathematics and its connection with the universe, that is the reason why Physics attract me the most.

Using such kind of paraphrasing will help you to make a good impression in front of the panelists. Also prepare the subject you will say your favorite with more precision.

I hope my answer helps. All the very best for your future endeavors!