<p>I would be reticent to suggest any particular school for a potential grad student. I imagine his “mentor” (his teacher?) knows his students voice well and is suggesting Manhatten, Mannes and Roosevelt because of particular teachers. I would recommend that this student get some frank evaluations of where he is technically. Possibly seek out a few teacher recommendations from some currently successful graduates. If he is ready for grad school and has a great voice, money should not be an issue. Find the right teacher and the right opportunities. These two things are different for every young singer.</p>