The Peabody Institute of the Johns Hopkins University

Many of Dr. Cornett's students have been Prize Winners and/or Finalists in national and international competitions, including:

The National Finals of the Metropolitan Opera Auditions, the Domingo OPERALIA Compeition, the Houston Grand Opera Competition, the Marian Anderson International Competition, the Jensen Foundation Vocal Competition, the Loren Zachary International Competition, the s'Hertogenbosch Netherlands Vocal Competition, the Queen Elizabeth Competition, the Licia Albanese Puccini Competition, the Young Concert Artists Competition, the Concert Artists Guild Competition, the Walter Naumburg Competition, the Liederkranz Foundation Awards, the MacAllister Competition, the Palm Beach Opera Competition, the Florida Grand Opera Competition, the Washington International Competition for Singers (Men's and Women's Divisions), the Heinz Rehfuss Singing Actors Tournament (Orlando Opera), the Stewart Awards, the Sullivan Foundation Awards, the George London Foundation  Awards, the Gerde-Lissner Foundation Awards, the Marian Anderson Award, the Borletti-Buitoni Trust Award, the Marilyn Horne Foundation Master Class Series, the Jenny Lind Competition, the Heida Hermann Vocal Competition, the Paul Robeson Vocal Competition, the Intermezzo/Elardo International Opera Competition, the Violetta Dupont International Opera Competition, the Connecticut Opera Vocal Competition, the National Opera Association Competition--Professional Division,  the Kennett Symphony (NJ) Soloist Competition, the Pottstown (PA) Symphony Soloist Competition, the Annapolis Opera Vocal Competition, the Marie E. Crump Vocal Competition, the Vincent P. Walter Voice/Opera Scholarship, the Russell E. Wonderlic Competition, and the Baltimore Music Club Competition (all categories).

Many of his students are singing opera roles nationally and internationally, with the following companies:

The Metropolitan Opera, New York City Opera, Florida Grand Opera, Lyric Opera of Chicago, San Francisco Opera, Opera Theatre of St. Louis, Seattle Opera,  Washington National Opera, Houston Grand Opera, Baltimore Opera, Wolf Trap Opera, Washington Concert Opera, Glimmerglass Opera, Lake George Opera, Berkshire Opera, Santa Fe Opera, Arizona Opera, Opera San Jose,  Merola Opera, Opera Pacific, Opera Santa Barbara, Hawaii Opera, Portland Opera, Opera Colorado, Lyric Opera of Kansas City, Opera Omaha, Atlanta Opera, Virginia Opera, Lyric Opera of San Antonio, Dallas Opera, Austin Lyric Opera, Kentucky Opera, Memphis Opera, Nashville Opera, Chattanooga Opera, Mobile Opera, Shreveport Opera, Birmingham Opera, Pensacola Opera, Mississipi Opera, Natchez Opera,  Sarasota Opera, Opera Tampa, Palm Beach Opera, Gold Coast Opera, Caramoor Festival, Marlboro Festival (chamber music), Opera de Quebec, Edmonton Opera, Calgary Opera, Opera North, Opera Northeast, Connecticut Opera, Opera Company of Philadelphia, Syracuse Opera, Utah Opera, Utah Festival Opera, Opera Delaware, Cleveland Opera, Lyric Opera of Cleveland, Ohio Light Opera, Toledo Opera, Dayton Opera, Boston Lyric Opera, Chorus Pro Musica Concert Opera (Boston), Skylight Opera, Opera Illinois, Monterey Opera, Fresno Opera, Opera Roanoke, Annapolis Opera, Summer Opera Theatre (D.C.), Deutsche Oper Berlin, Zurich Opera, Stuttgart Opera, Heidelberg Opera, Regensburg Opera, Leipzig Opera, Giessen Opera, Opera National de Paris, Greek National Opera (Athens), Teatro Colon (Buenos Aires), Teatro Colon (Bogata), Opera Ireland (Dublin). 

Several students have performed (or are currently performing) lead roles in Broadway productions, as well as with national touring companies of Broadway shows.