By the year 1902, the parish debt had been cleared and there was a sum of $60,000 in the parish treasury.  Father John B. Daily received permission from Bishop McDonnell as well as his own religious superiors to proceed with the building of the school.  On April 2, 1902 construction commenced.  On Labor Day of 1903 (September 7), the school was officially blessed by the Bishop of Brooklyn.  The sermon was preached by Father Thomas O’Brien, the diocesan superintendent of schools.  The first name of the school was St. Alphonsus School, in honor of the founder of the Redemptorists.

Classes began on September 9, 1903 with 449 students and Sister Geraldine as the first principal.   Reverend Mother Mary Louis, Superior of the Sisters of St. Joseph, sent other sisters to reinforce the community.   By 1910, the enrollment had jumped to 1,204. 
 

In 1917, Bishop McDonnell granted the request of the pastor, Father James Barron to change the name to Our Lady of Perpetual Help School. 

Today, we are known as Our Lady of Perpetual Help Catholic Academy of Brooklyn.  We are supported by the Parish of Our Lady of Perpetual Help in the Sunset Park Community.