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

The National Finals of the Metropolitan Opera Auditions, Operalia: The World Competition, 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 Veronica Dunne International Vocal Competition (Dublin, Ireland), the Licia Albanese Puccini Competition, the Young Concert Artists Competition, the Concert Artists Guild Competition, the Walter Naumburg Competition, the Liederkranz Foundation Awards, the Opera Index Competition, the Bel Canto Foundation Awards, the Guilio Gari Competition, the Mario Lanza Competition, the MacAllister Competition, the James Toland Vocal Arts Competition, the Palm Beach Opera Competition, the Florida Grand Opera Competition, the Lotte Lenya Competition,  the American Traditions Vocal 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 John Alexander National Vocal Competition, the National Association of Teachers of Singing Artist Awards, the Intermezzo/Elardo International Opera Competition, the Giovanni Consiglio International Competition, the Violetta Dupont International Opera Competition, the Premiere Opera Foundation International Competition, the Maria Callas International Grand Prix–Opera, the Clairmont-Ferrant International Opera Competition, the Portofino International Opera Competition, the Avignon Grand Opera International Competition, the Opera Theatre of Pittsburgh Mildred Miller International Vocal Competition, the National Opera Association Competition–Professional Division, the NATS Competition–Professional Division, the Classical Singer Competition, the American Prize in Vocal Performance Friedrich Schorr Memorial Award, the Shreveport Opera Singer-of-the-Year Competition, the Handel Aria Competition, the Zenith Opera Competition, the Orpheus Vocal Competition, the Partners for the Arts Vocal Competition, the Connecticut Opera Vocal Competition, the Saltworks Opera Competition, the Harlem Opera Theater Vocal Competition, the Kennett Square Symphony (PA) Soloist Competition, the Pottstown (PA) Symphony Soloist Competition, the Annapolis Opera Vocal Competition, the George Shirley Vocal Competition, the Marie E. Crump Vocal Competition, the Harold Haugh Comic Opera Competition, the Russell E. Wonderlic Competition, and the Baltimore Music Club Competition (all categories).

Many of Dr. Cornett’s 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, Florentine Opera, Des Moines Metro Opera, Arizona Opera, Opera San Jose, Merola Opera, Opera Pacific, Opera Santa Barbara, Lyric Opera of San Diego, Hawaii Opera, Portland Opera, Opera Colorado, Lyric Opera of Kansas City, Opera Omaha, Wichita Grand Opera, Atlanta Opera, Tulsa Opera, Virginia Opera, Lyric Opera of San Antonio, Dallas Opera, Austin Lyric Opera, Tulsa Opera, Kentucky Opera, Memphis Opera, Nashville Opera, Chattanooga Opera, Mobile Opera, Shreveport Opera, Birmingham Opera, Pensacola Opera, Opera Naples (Florida), Opera Delaware, Mississippi Opera, Natchez Opera,  Sarasota Opera, Opera Tampa, Palm Beach Opera, Gold Coast Opera, Caramoor Festival, Marlboro Festival (chamber music), Opera de Québec, Edmonton Opera, Calgary Opera, Opera North, Opera Northeast, Connecticut Opera, Opera Company of Philadelphia, Syracuse Opera, Opera Idaho, Utah Opera, Utah Festival Opera, Opera Delaware, Opera New Jersey, Cleveland Opera, Lyric Opera of Cleveland, Ohio Light Opera, Toledo Opera, Dayton Opera, Cincinnati 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.), Baltimore Concert Opera,  Finnish National Opera,  Savonlinna Opera Festival (Finland), Malmö Opera (Sweden), Winterthur Opera (Switzerland), Teatro Caro Felice (Genoa, Italy), Opera Valencia (Spain), Deutsche Oper Berlin, Zurich Opera, Hamburg State Opera, Stuttgart Opera, Leipzig Opera, Gelsenkirchen Opera, Freiburg Opera, Augsburg Opera, Aachen Opera, Hannover State Opera, Braunschweig Opera, Heidelberg Opera, Regensburg Opera, Halle Opera, Karlsruhe Opera, Giessen Opera, Lübeck Opera, Koblenz Opera, Opéra National de Paris, Opéra Grand Avignon, Opéra de Reims, Greek National Opera (Athens), Teatro Colón (Buenos Aires), Teatro Colón (Bogata), Opera Ireland (Dublin), Wexford Festival Opera (Ireland).

Several students have performed  lead roles in Broadway productions, as well as with national touring companies of Broadway shows. Currently (since October, 2021), Michael Maliakel (BM, 2013, baritone) is performing the title role of Aladdin in the Broadway production of Aladdin.