Hi aspirant,

Yes the private board result is valid for JEE examination. But for that a candidate must have passed the eligibity criteria such as the candidate must have passed class 12th with a minimum of 75% marks froma recognized board of india.

https://engineering.careers360.com/exams/jee-main

So you are eligible for JEE main exam. Good luck and prepare well since the competition is very high.

Hope this information will help you.

Thank you and very good luck:)