Hey there!

For applying for undergraduate programs in USA, you will have to appear for the standardised tests such as SAT or the ACT and then you will have to appear for English proficiency tests such as TOEFL or IELTS. You will then have to fill up the CommonApp and get your counsellor and teachers to upload your recommendation letters and your transcripts (results) from standard 9 to standard 12. After that you will have to work on your CommonApp essay, which is an essential part of your application. You are advised to visit the college's website to see the admission procedures and eligibility criteria for international students.

However, if you are still unsure if your board of education is recognized or not, you can send an email to the respective colleges (in which you are planning to apply to). 

Hope this helps. All the best!