Danbury Catholic School as it stands today started as nothing more than an architect's sketch by James M. Duffy, architect from Sioux City, IA. That sketch appeared in the Danbury Review on Thursday, June 20, 1963. The pastor at that time, Father Richard V. Sweeney, announced the plans to build the new quarter million dollar facility in the very near future with little to no debt due to the unprecedented response by all parishioners with advanced gifts and pledges for the building campaign. Maurice Welte was named the chairman for the building campaign.
Danbury Catholic was built and then dedicated on May 28, 1965. With the dedication taking place at 3:15 p.m. in the afternoon and officiated by The Most Reverend Joseph M. Mueller, D. D., Bishop of Sioux City for the blessing. There was then a banquet that followed for all in attendance. On Monday, May 31, the public was invited for an Open House and walk through of the building.
A major highlight to the building was the approach, where a statue of Mary and small shrine area was arranged and landscaped immediately to the left of the main entrance of the building. This shrine area remains today and is still a highlight to those that attend Danbury Catholic School.
There continued a long standing dedication to Catholic education that began in Danbury in 1887 when St. Patrick's Academy was built.