Calgary Roman Catholic Separate School District No. 1 or the Calgary Catholic School District (CCSD) is the Roman Catholic separate school board in Calgary, Alberta, Canada. It also serves the neighbouring communities of Airdrie, Chestermere, Cochrane and Rocky View County. The CSSD receives funding for students from the provincial government of Alberta.

The district was founded on 18 December 1885 as the Lacombe Roman Catholic School District No. 1 in what was then part of the North West Territories. Its first school, also built in 1885, was St. Mary's, which is the oldest operating school in Calgary (though in a newer building).

The CSSD is second in size (by student count) to the city's main school board, the public Calgary Board of Education (CBE). Unlike the Calgary Board of Education, the territory of the CSSD extends slightly outside the municipal limits of the city. It is the largest publicly funded Catholic School District in Western Canada.

For the 2020 - 2021 school year, there were over 59,000 students in the CSSD, with 118 schools in total.

A group of seven elected trustees run the CSSD. Trustees represent wards in the city, as well as neighboring communities. They are elected every three years, in the regular municipal election. In the election, Calgary voters can only vote for a trustee to one (not both) of the two school boards. Voters for the CSSD will include Catholics and non-Catholics who support the Catholic system. The public (CBE) and Catholic (CSSD) systems operate independently of each other, and are both under the direct authority of the provincial government of Alberta. The last election was in October 2017.

The CSSD offers a variety of specialized programs, including Advanced Placement, Fine Arts, the Hockey Canada Skills Academy, Home Study, International Baccalaureate, Languages, Single Gender and Year-Round Education. There is also the Self-Directed Learning program at Bishop Carroll High School, which allows students to move through the Alberta curriculum at their own individual pace.

In Alberta, an elementary school normally teaches Kindergarten to Grade 6, while a junior high school teaches Grades 7–9. Some junior high schools are combined with high schools or elementary schools. Some schools may have French Immersion in Grade 7, 8 or 9. The following list provides information on CSSD elementary and junior high schools.

Name	Type	City/Town	Grades
Ascension of Our Lord	Elementary Jr. High	Calgary	K-9
Bishop Kidd	Jr. High	Calgary	7-9
Blessed Marie-Rose	Elementary Jr. High	Calgary	K-9
Blessed Mother Teresa	Elementary	Calgary	K-6
Christ the King	Elementary Jr. High	Calgary	K-9
Corpus Christi	Elementary	Calgary	K-6
Don Bosco	Elementary Jr. High	Calgary	K-9
Father Doucet	Elementary	Calgary	K-6
Father James Whelihan	Elementary Jr. High	Calgary	K-9
Father Scollen	Elementary Jr. High	Calgary	K-9
Guardian Angel	Elementary	Calgary	K-6
Good Shepherd	Elementary Jr. High	Airdrie	K-8
Holy Angels	Elementary	Calgary	K-6
Holy Cross	Elementary Jr. High	Calgary	K-9
Holy Family	Elementary	Calgary	K-6
Holy Name	Elementary	Calgary	K-6
Holy Spirit	Elementary	Cochrane	K-6
Holy Trinity	Elementary	Calgary	K-6
John Costello	Elementary	Calgary	K-6
Light of Christ	Elementary Jr. High	Calgary	K-9
Madeleine d'Houet	Jr. High	Calgary	7-9
Mother Mary Greene	Elementary	Calgary	K-6
Msgr. A.J. Hetherington	Elementary	Calgary	K-6
Msgr. E.L. Doyle	Elementary	Calgary	K-6
Msgr. J.J. O'Brien	Elementary Jr. High	Calgary	K-9
Msgr. J.S. Smith	Elementary Jr. High	Calgary	K-9
Msgr. Neville Anderson	Elementary	Calgary	K-6
Our Lady of Fatima	Elementary	Calgary	K-6
Our Lady of Grace	Elementary Jr. High	Calgary	K-9
Our Lady of Lourdes	Elementary Jr. High	Calgary	K-9
Our Lady of Peace	Elementary Jr. High	Calgary	K-9
Our Lady of the Assumption	Elementary Jr. High	Calgary	K-9
Our Lady of the Evergreens	Elementary	Calgary	K-6
Our Lady of the Rosary	Elementary	Calgary	K-6
Our Lady of Wisdom	Elementary	Chestermere	K-6
Our Lady Queen of Peace	Elementary Jr. High	Airdrie	K-8
Sacred Heart	Elementary	Calgary	K-6
St. Albert the Great	Elementary Jr. High	Calgary	K-9
St. Alphonsus	Elementary Jr. High	Calgary	K-9
St. Ambrose	Elementary Jr. High	Calgary	K-9
St. Andrew	Elementary	Calgary	K-6
St. Angela	Elementary	Calgary	K-6
St. Anthony	Elementary	Calgary	4-6
St. Augustine	Elementary Jr. High	Calgary	K-9
St. Basil	Elementary Jr. High	Calgary	K-9
St. Bede	Elementary	Calgary	K-6
St. Benedict	Elementary	Calgary	K-6
St. Bernadette	Elementary	Calgary	K-6
St. Bonaventure	Jr. High	Calgary	7-9
St. Boniface	Elementary	Calgary	K-6
St. Brigid	Elementary Jr. High	Calgary	K-9
St. Catherine	Elementary	Calgary	K-6
St. Cecilia	Elementary	Calgary	K-6
St. Clare	Elementary	Calgary	K-6
St. Cyril	Elementary Jr. High	Calgary	K-9
St. Damien	Elementary	Calgary	K-6
St. Dominic	Elementary	Calgary	K-6
St. Elizabeth Seton	Elementary Jr. High	Calgary	K-9
St. Gabriel the Archangel	Jr. High, High School	Chestermere	7-12
St. Gerard	Elementary	Calgary	K-6
St. Gregory	Jr. High	Calgary	6-9
St. Helena	Jr. High	Calgary	7-9
St. Henry	Elementary	Calgary	K-6
St. Hubert	Elementary	Calgary	K-6
St. Isabella	Elementary Jr. High	Calgary	K-9
St. James	Elementary Jr. High	Calgary	K-9
St. Jean Brebeuf	Jr. High	Calgary	7-9
St. Jerome	Elementary	Calgary	K-6
St. Joan of Arc	Elementary Jr. High	Calgary	K-9
St. John Henry Newman	Elementary Jr. High	Calgary	K-9
St. John Paul II	Elementary	Calgary	K-6
St. John XXIII	Elementary Jr. High	Calgary	K-9
St. Joseph	Elementary Jr. High	Calgary	K-9
St. Josephine Bakhita	Elementary	Calgary	K-6
St. Jude	Elementary	Calgary	K-6
St. Kateri Tekakwitha	Elementary	Calgary	K-6
St. Luke	Elementary	Calgary	K-6
St. Margaret	Elementary Jr. High	Calgary	K-9
St. Maria Goretti School	Elementary	Calgary	K-6
St. Mark	Elementary	Calgary	K-6
St. Martha	Elementary Jr. High	Calgary	K-9
St. Matthew	Elementary Jr. High	Calgary	K-9
St. Michael	Elementary Jr. High	Calgary	K-9
St. Monica	Elementary Jr. High	Calgary	K-9
St. Patrick	Elementary	Calgary	K-6
St. Peter	Elementary	Calgary	K-6
St. Philip	Elementary	Calgary	K-6
St. Pius X	Elementary	Calgary	K-6
St. Rita	Elementary	Calgary	K-6
St. Rose of Lima	Elementary Jr. High	Calgary	K-9
St. Rupert	Elementary	Calgary	K-6
St. Sebastian	Elementary	Calgary	K-6
St. Stephen	Elementary Jr. High	Calgary	K-9
St. Sylvester	Elementary	Calgary	K-6
St. Thomas Aquinas	Elementary	Calgary	K-5
St. Thomas More	Elementary	Calgary	K-6
St. Timothy Jr./Sr. High School	Jr. High/High School	Cochrane	7-12
St. Veronica School	Elementary Jr. High	Airdrie	K-7
St. Vincent de Paul	Elementary Jr. High	Calgary	K-9
St. Wilfrid	Elementary	Calgary	K-6
St. William	Elementary	Calgary	K-6

In Alberta, a senior high school teaches Grades 10-12 (what other jurisdictions call "secondary schools"). However, some may not teach all three grades. Also, some may also teach earlier grades. The following is a list of CSSD senior high schools.

Name	Address	City/Town	Grades
All Saints High School	729 Legacy Village Road SE	Calgary	10-12
Bishop Carroll High School	4624 Richard Road S.W.	Calgary	10-12
Bishop McNally High School	5700 Falconridge Blvd. N.E.	Calgary	10-12
Bishop O'Byrne High School	500, 333 Shawville Blvd. S.E.	Calgary	10-12
Father Lacombe High School	3615 Radcliffe Drive S.E.	Calgary	10-12
Notre Dame High School	11900 Country Village Link N.E.	Calgary	10-12
Our Lady of Lourdes School	1916 2 Street S.W.	Calgary	1-12
Our Lady of the Rockies High School	111 Haddon Road S.W.	Calgary	10-12
St. Anne Academic Centre	1010-21 Ave. SE	Calgary	12
St. Francis High School	877 Northmount Drive N.W.	Calgary	10-12
St. Gabriel The Archangel School	197 Invermere Drive	Chestermere	K-12
St. Martin de Porres High School	410 Yankee Valley Blvd. S.W.	Airdrie	9-12
St. Mary's High School	111 - 18 Avenue S.W.	Calgary	10-12
St. Timothy High School	501 Sunset Drive	Cochrane	7-12

• List of Alberta school boards

• Ramon Gonzalez (June 5, 2005). "Lacombe trumpeted education: Early Oblate helped establish residential schools, Catholic education". Western Catholic Reporter. Archived from the original on October 4, 2006. Retrieved January 16, 2006.

Media related to Calgary Catholic School District at Wikimedia Commons

• Official website