The term music school refers to an educational institution specialized in the study, training and research of music. Different terms refer to this concept such as school of music, music academy, music faculty, college of music, music department (of a larger institution) or conservatory.

Music instruction can be provided within the compulsory general education system, or within specialized children's music schools such as the Purcell School. Elementary school children can access music instruction also in after-school institutions such as music academies or music schools. In Venezuela El Sistema of youth orchestras provides free after-school instrumental instruction through music schools called núcleos. The term “music school” can be also applied to institutions of higher education under names such as school of music, such as the Jacobs School of Music of Indiana University, music academy, like the Sibelius Academy, music faculty as the Don Wright Faculty of Music of the University of Western Ontario, college of music, characterized by the Royal College of Music and the Berklee College of Music, music department, like the Department of Music at the University of California, Berkeley or the term conservatory, exemplified by the Conservatoire de Paris and the term higher school of music or university of music such as the Cologne University of Music known as Hochschule für Musik und Tanz Köln in German. Instruction includes training in the performance of musical instruments, singing, musical composition, conducting, musicianship, as well as academic and research fields such as musicology, music history and music theory.

In the English language, black sheep is an idiom used to describe an odd or disreputable member of a group, especially within a family. The term has typically been given negative implications, implying waywardness. It derived from the atypical and unwanted presence of other black individuals in flocks of white sheep.

In psychology, the black sheep effect refers to the tendency of group members to judge likeable ingroup members more positively and deviant ingroup member more negatively than comparable outgroup members.

The term originated from the occasional black sheep which are born into a flock of white sheep due to a genetic process of recessive traits. Black wool was considered commercially undesirable because it could not be dyed. In 18th and 19th century England, the black color of the sheep was seen as the mark of the devil. In modern usage, the expression has lost some of its negative connotations, though the term is usually given to the member of a group who has certain characteristics or lack thereof deemed undesirable by that group.