How better is the IB valued over any other school board?

<p>I am a 10th grade CBSE (Central Board Of Secondary Education, India) student and have decided to move to a better or international board and in that case I have chosen an IB school. I just wanted to know if IB is really that much preffered in the US or the UK?
And if considering as I have been a great student throughout these years and continue to be the same how are the chances for me getting admission into a US or UK university increase.
I will be persuing the STEM courses afterwards.</p>

<p>Thanks in advance for your time!</p>