April 7, 1959 Fr. Louis Dierker was appointed first pastor of St. Simon the Apostle Parish.
June 21, 1959 First Masses were held at Concord School during church construction.
Summer 1959 Dominican Order agreed to teach in the school.
November 22, 1959 Cornerstone was laid for the church and school.
January 9, 1960 Fr. Dierker moved into the rectory on Jackie Lane.
August 1960 Church construction was completed.
September 1960 School opened with four Dominican sisters, nine lay teachers and 518 students.
Fall 1960 First Holy Name and Madonna Guild meetings were held.
December 3, 1961 Church and school dedication.
June 1970 Parish Council was formed.
June 6, 1972 Fr. Thomas Woracek was appointed the second pastor of St. Simon the Apostle
Fall 1972 Groundbreaking for the new rectory on the parish grounds.
September 1973 Parish School of Religion started.
March 1977 Remodeling started on the church.
December 7, 1977 First Mass was held in the newly remodeled church.
April 9, 1978 Dedication of the remodeled church.
October 28, 1984 25th Anniversary of St. Simon the Apostle Parish.
Fall 1984 Plans were developed for a school gym, library and adding a Kindergarten program.
June 1985 Fr. William Ahrens was appointed the third pastor of St. Simon the Apostle Parish.
December 14, 1986 Groundbreaking was held for school expansion.
September 1987 First Kindergarten class was held.
January 17, 1988 Dedication of the Monsignor Woracek Parish Center was held.
September 1995 Convent was converted to Simon Says Early Childhood Center.
September 24, 2000 Groundbreaking for a new church started.
March 17, 2002 First Mass was held in the new church.
May 4, 2002 Dedication of new church by then Archbishop Justin Rigali.
June 23, 2003 Fr. Mark Ebert was appointed fourth pastor of St. Simon the Apostle Parish.
April 2004 The new church building was paid off.
Summer 2007 All the roofs of the school and gym were replaced and the school was air-
June 17, 2008 Fr. Erich Fechner was appointed fifth pastor of St. Simon the Apostle Parish.
June 21, 2008 Fiftieth Jubilee Year-Long Kick-off Celebration
December 2010 Parish endowment fund reached $1,000,000.
July 1, 2015 Fr. Brad Modde was appointed fifth pastor of St. Simon the Apostle Parish