CBSE

Yes, with this score, you could get admission in any stream of B.Sc in St. Xavier's Mumbai. But, BA could be a slightly tough option. BMM & BMS are entrance based.

Hello Rohan, Yes, it's worth. If you thought that you have not score well according to your ability then you should try this. With the help of CBSE Improvement Exam, you stand a chance to give the best in the exam and prove your abilities. It will help you to get enough marks to get admission in NITs and IITs. But remember that the most prime and mandatory rule of CBSE Improvement Exam 2018 is that the student must have passed the Board Exam. The failed students would not be able to appear for the exam. You can get the complete details regarding the CBSE improvement exam from - https://scoop.eduncle.com/cbse-improvement-exam.

You can go for Bachelor of Arts, as it allows you to opt from a number of subjects. You can opt any subject of your choice.

If you think you can perform better, it is a good option. But, it depends on what course you are willing to opt.

Hello,
Hope you are doing well. As you said you have 5K rank in JEE Mains under ST category, so you will be able to get IIIT, NIT and top government college. Go for counselling and get the best college with your marks. You will definitely get computer Science branch with this rank. All the Best.

After gaining so much experience, I think you can teach. But, as per the new government eligibility for teacher is that a teacher must have a degree of B.Ed. So, it depends on school to school that they take you as a teacher or not. But, you can teach primary classes. I suggest that you should pursue B.Ed, because it is must for teacher.