WElcome aboard/ It is good inquire about what yo need to do. To some degree gettimg a scholarship depends on many variables including your GPA, your proficiency at playing, and sight reading. Arbans is the most important, Clarke Studies are also a must and these have been the most useful. I believe if you want to truly be a professional, THEN GET AN INSTRUCTOR! An instructor will hold you accountable to your discipline of trumpet. If the University you wish to attend is close by, then get one there, if not call the Department of Music, speak with the Chief of the Trumpets/Horns division, and ask him/her who he/she would recommend in your area. Build rapport with the University. It shows your seriousness of interest, to do so. BTW, making State Band is a great resume add, so there is no excuse, when you've got the gift and are not showing the level of determination. You sound like your blessed, so go forth and use it. PRACTICE, PRACTICE,PRACTICE, IS WHAT YOU WILL HEAR OVER AND OVER AGAIN.