At the San Francisco Conservatory of Music, Dr. Harris is on the faculty of the Collegiate, Pre-College, & Continuing Education program.  As collegiate faculty, he taught in the Music History and Literature Department creating the first ever class on art songs by Black composers and he taught Basic Phonetics/Introduction to IPA. In the Continuing Education Program, he teaches Vocal Performance and Musical Theatre Workshop classes and private voice lessons with the Pre-College Academy.  At the San Francisco Girls Chorus, he was a  Soloist Intensive Voice Instructor for the award winning Premiere Ensemble. Other teaching affiliations include the University of Nevada, Las Vegas (voice),West Valley College (Hip-Hop) Head-Royce School (voice/musical theater), Menlo School (voice/musical theater), P.A.L.S. at the Aspen Music Festival, and Convent & Stuart Hall (voice/musical theater & general music).

Phillip is a dedicated voice educator focused on empowering students through strong technique, expressive storytelling, and inclusive repertoire. A specialist in classical songs by Black composers, he has presented lectures at institutions such as the Peabody Institute of Johns Hopkins, Westminster Choir College, UC Santa Cruz, Alabama State University, San Francisco City College, and at NATS events locally and regionally. He holds leadership positions with the National Association of Teachers of Singing on the national, regional, and local levels. He has given masterclasses at Alabama State, University of Nebraska Omaha, the San Francisco Girls Chorus, and Los Medanos College. His students have performed lead roles on Broadway and earned top honors in competitions including NATS (national, regional, and local), Schmidt Vocal Competition, American Protégé, and the Junior Bach Festival. He has prepared many students to further  their music study at Oberlin Conservatory, UCLA,  Interlochen, BU Tanglewood Institute, MPulse at Michigan, UCLA Summer Musical Theatre Program, SFCM Summer Vocal Academy, Berklee Summer Musical Theatre Program, and Stagedoor Manor. Phillip holds voice degrees from the University of Nevada, Las Vegas (DMA), University of Michigan (MM), and UC Irvine (BM).