SAT

Gap periods are acceptable in US. I assume you are applying to US universities. Provide a statement of activity along with your SOP. Take part in extracurriculars and voluntary work in addition to the college preparation.

Why not? Your education board has nothing to do with. SAT is open to everyone and has no eligibility. High school students take the SAT to study UG programs abroad.

Hi Ankush, you have to first register and create an account on SAT's official website https://www.collegeboard.org/
You will find examination dates, syllabus, fee information, test centers in India and elsewhere and every other information regarding SAT on this website only. The test is held several times a year. In the 2017-18 and 2018-19 school years, the SAT will be available internationally in October, December, March, and May.
Check these URLS
https://collegereadiness.collegeboard.org/sat
https://collegereadiness.collegeboard.org/sat/register/international

Dear Taran,
SAT is an aptitude test taken by high school students to apply to universities mainly in the US for undergraduate studies. You may please visit collegeboard.org for details related to SAT.

Dear Vaibhav,
A SAT score of 1350 to 1500 is a standard score for getting into a good university. Universities also have their own requirements. So, always check on their websites.

Hi Nitin,
Please clarify if you want to get into Howard or Harvard. Both universities are different but people often make typo errors. As for admission requirements, you may check it easily on the university website but for guidance please clarify the university name.

Hi,
Yes, admissions will be based on your overall profile. And you have already posted this question, answered very correctly by Vikas Kaushik.

Hi Sagar,
It is good to have a consistent academic record. Marks from 10th onwards is important. Plus, if your SAT score is good along with your school marks then admission chances will increase automatically. If, however, you can't do well in your 11th and work very hard on your 12th and SAT and also work on your extra curricular.

As per most of the students who have appeared for SAT and JEE exams have the opinion that JEE Advanced is very tough in comparison to SAT.

Its completely upto you. Please talk with your family about your 11th and 12th, talking about SAT, coaching centers are available in both cities and franchisees are same.