More often than not, students who study the same instrument with more than 1 teacher simultaneously end up confused rather than enriched. Students, especially ones in their early developmental stages, lack both the capability and experience to digest different pedagogical approaches and techniques and thus, while either approach in itself may be legit and proven, find themselves progressing less idealy.
With this in mind, the YPM Music School does not allow its students to study the same instrument simultaneously with a second teacher/at another institution unless
a) the student is of advanced standing (Pre Conservatory Program) or
b) the student seeks to study outside the classical dicipline taught at the YPM Music School.