a school that teaches nonresident students by mail
communication by the exchange of letters
compatibility of observations
(mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane
an educational institution
a building where young people receive education
a body of creative artists or writers or thinkers linked by a similar style or by similar teachers
educate in or as if in a school
the period of instruction in a school; the time period when school is in session
