Most music schools/departments want you to learn music theory their way and will give you their own placement test either during the admissions process or after matriculation. If you intend to be a music major, the AP Music Theory test may be of very little value to you. Good luck with you studies and if you do plan on training for the AP exam. Many universities will not grant credit for this exam as they offer their own placement tests, and I personally don’t think a 5 would greatly affect an acceptance to Harvard.

I should add the AP Music Theory exam isn’t the best exam to self study, unless you simply want to do it for kicks. Your piano teacher is crazy not to know/“seem confident with” the stuff on the exam as it’s pretty much a Theory 101 class. If you have absolute pitch and some ear training software the aural portion should be doable nevertheless meeting with a chorale instructor might be helpful (not surely not necessary) for the sight singing.

There are a number of quality textbooks written by intelligent professors who are currently involved in music theory education, including Laitz’s “The Complete Musician” and Jane Piper Clendinning and Elizabeth West Marvin’s “The Musician’s Guide to Theory and Analysis.” This book seems to include an introduction to 20th century music, which will be highly interesting but complete useless on the exam. I know very little of the work of Stefan Kostka (I believe you have his “Tonal Harmony”). While it covers the basics of part writing, I remember it being rather confusing and overall of little use (I cannot admit, however, to being especially careful with my reading of the book I still doubt it will be substantially informative). George Thaddeus Jones’ “Music Theory” will not be especially helpful.

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