The seal is composed of a shield circumscribed by the school’s name and location, St. Joseph’s School of Mactan, Mactan, Lapu-Lapu City. At the bottom of the shield is the year of the school’s registration to the Securities and Exchange Commission.
Cutting across the shield is a ribbon bearing the motto:
SAPIENTIA, BONITAS, CARITAS (Wisdom, Goodness, Charity/Love).
SAPIENTIA, enlightened knowledge, is symbolized by the books over which stands a lighted lamp.
BONITAS is represented by the Franciscan Cross under which are the crossed hands of Jesus Christ and Saint Francis of Assisi.
CARITAS, loving service, is symbolized by the rose.
The seal suggests symbolically the school’s patron, St. Joseph, with the carpenter’s toolbox and lily. The fleur de lys stands for out Lady of Immaculate Conception under whose special patronage the school is entrusted.