Indiana University is a known school and the Jacobs school of music is known worldwide for its quality. With Texas Christian University(thanks to Van Cliburn,Piano Texas),Julliard,Curtis and Manhattan, Jacobs is one of the top schools.
With this said,be very careful what you wish for.Let me explain.
If your goal is to be a concert pianist,I would advise you study in a conservatory abroad(my suggestion is France) or attend a university here in the artist diploma program.
Why?because otherwise in any BM,MM and such programs,you will spend almost 90% of your time doing academics,taking tests and trying to maintain your GPA for financials.
You say you are in high school.Well,I don't know your level,however if you are that good as to attempt the Indiana School of music,I would recommend you forget about Bachelor and such studies until you are at least 25 years old. Why?because most piano competitions have their maximum age of acceptance set at 30.
Now,if you like academics and you think you can do both performance and academics at the same time and be successful, by all means, do not hesitate to do it.
However from personal experience,I can tell you that it is very tough and the universities(at least the ones I attended) do not help you find any performance opportunities and do not promote you.
Personally,when I got to the USA, back in 1999,I committed the error of listening to my parents who strongly suggested I do my BM. i was 20 years old back then and I still had about 5-6 years during which the window of opportunity to succeed as concert pianist was open.But I listened to my parents suggestion and I am still regreting that.I am still smacking myself for listening and not doing what my gut was telling me. The result of that is that now,for me to get concerts and any other opportunities,I have to email universities and other venues.And it is not a good way to do business,because when you are not that much known,even with a resume such as mine,success is like 1 of 20.
Sorry for the long post,but I feel very strongly about priority given to performance,instead of academics.
In conclusion, it all depends on your current level of playing, on what you want to do and of course,since you are a minor,it also depends on you convincing your parents that your decision is the right one