https://www.catholic.com/encyclopedia/clerks-regular-of-the-pious-schools
Clerks Regular of the Pious Schools | Catholic Answers Encyclopedia
Schools, CLERKS REGULAR OF THE PIOUS, called also Piarists, Scolopii, Escolapios, Poor Clerks of the Mother of God, and the Pauline Congregation, a religious...
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https://www.newadvent.org/cathen/04052b.htm
CATHOLIC ENCYCLOPEDIA: Clerks Regular of the Mother of God of Lucca
A congregation founded by St. Giovanni Leonardi
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