Hello,

.

Yes, ofcourse you can writer JEE Mains. AP open school society is even a Institute educating students. Once you meet the eligibility criteria of certain examination you want to give, you can apply for those examinations. As you are talking about jee mains, have a look at Eligiblity criteria:

• Must pass 12
• Particular percentage is not mentioned, so scoring 50% will be great
• Can only give 3 consecutive exams
• Subjects required will be based on the stream you are choosing

Now, follow the link for more brief details

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

Most competitive exams also accept open school students. If you have any doubts regarding any particular entrance exam, please do ask us and we will help you.