- College opened on Wednesday 30th August 1995 in Temporary accommodation at Hartstown Community School.
- Junior Debating team wins the Inter schools Dublin West Debating Competition.
- College opens at Carpenterstown Road, Dublin 15.
- Niamh Breathanach, Minister for Education visits the College – December ‘96
- First Science Trip to London – May 1997.
- College canoeing team enters Liffey Descent – May 1997
- Parents Association hosted The Fashion Show and raised £15,000.00
- School Choir reaches the finals of Slogadh – March 1998
- Students visit Torai Island – May 1998
- First students sit the Junior Certificate – June 1998.
- Gold Medal success in Leinster Championships for Kate and Miranda Ruddock May 1998
- Marina Loughney wins a Silver Medal in the All Ireland Swimming Gala in the 200m Individual Medley. Marina Loughney and Jennifer Victory selected to represent Ireland and the College in The FISEC games in Spain. July 1998
- Transition Year and Leaving Certificate Vocational Programme (LCVP) launched in September 1998.
- Adult Education programme launched in September
- College Relay Swimming Team wins All Ireland Finals in Belfast – October 1998
- “Starsearch” Talent Contest hosted in January 1999. Sinead McCarthy wins the inaugural event.
- College Choir performs in the National Concert Hall in the Co Dublin VEC Festival of Music.- February 1999
- First French Exchange Programme with Parisian School.
- College wins Three All-Ireland Slogadh titles – March 1999
- Rainbows programme launched in the College
- Leaving Certificate Students travel to Italy
- College Public Speaking team reach the National Semi Finals of the Mental Health Public Speaking Project – May 1999
- Grandparents’ Day hosted by the College in May 1999
- U14 boys win All-Ireland Basketball Final in Killarney – April 2000.
- Transition Years travel to Barcelona – March 2000
- European School Tour to Bavaria Germany – April 2000
- Girls U14 Basketball win All Ireland Final – May 2000
- First Students sit Leaving Certificate – June 2000
- Mary Robinson UN High Commissioner for Human Rights Launches the Refugee Solidarity Badge designed by Graham and John Brocklebank – December 2000
- Aoife Ni Mhaoileoin achieves second place in her category at the Young Scientist Exhibition. – January 2001
- Mental Health Public Speaking Team reaches the All-Ireland Final in Trinity College. – May 2001
- Leaving Certificate Applied Programme (LCAP) launched – September 2001
- College Basketball teams win three Leinster titles – April 2002
- The Mentor Programme launched – September 2002
- College Swimming Relay Team wins All Ireland Finals – May 2002
- First Prefects appointed – September 2003
- U14 Leinster Gaelic Football Champions 2003 & 2004
- David Hopkins (Senior Student) elected chairperson of Dáil na nOg in Dublin. A Fingal County Council initiative to promote political awareness.
- National Finalists in the Mental Health Public Speaking Project 2004
- Susan McNeely wins gold medal in Home Economics 2004
- Kirill Ignatieve – Outstanding Maths results in Leaving Certificate 2004
- Aoife Ni Mhaoileoin represents Ireland in the Physics Olympiad in Amsterdam May 2004 winning silver.
- Under 14s Boys Gaelic Football team secure top flight football by winning the Division “B” Leinster Final.
- The Under 16 Hurlers win the College’s first Hurling Title by defeating Scoil Cathriona in the 2005 Dublin Championship.
- Michael Daly signs professionally for Manchester City in June 2005.
- The Language Centre was established in September 2005 to cater for the linguistic needs of international students and the cultural challenges presented by our changing society.
- The U16 Girls Soccer team begins an amazing run that takes them to their First Leinster title when they beat Alexandra College 3-2 in a dramatic penalty shoot-out in December 2006.
- The U18 Boys Gaelic Football team competes in the Division “A” Leinster Final against St Peter’s Dunboyne in February 2006.
- David O’Brien is selected to play for the Republic of Ireland in the U16 European Championships in April 2006.
- Past pupils Paddy Andrews and Ross McConnell take their place in on the Dublin Senior Gaelic Team.
- The International Board Games Club is established in December 2006
- Paddy Andrews is selected to represented Ireland against Australia in the Compromise Rules Tournament in April 2006
- Stephen Hopkins and David McGowan win the Leinster Senior Debating Title for the first time.
- Niamh Ní Mhaoileoin and Sinead Ni Riada win the Aoife Begley Debating Trophy.
- Under the auspices to the Language Centre, Sumaia Edris, Muzna Hussain, Mashaal Jaffar, Hyeda Kamal, Iman Quaiser and Verdah Tanveer came first in Ireland in the Léargas EDL Landscape Competition.
- Sinead Ní Riada was awarded first place in Ireland for her achievement in the 2006 Leaving Certificate Technical Drawing Examination.
- Jack Kiernan and Peter Murphy win the AIB Junior Schools Debating Competition in April 2007
- Philip O’Callaghan is one of twenty finalists to be nominated for the Pramerica Spirit of Community Award. Philip was honoured for his work with the Laura Lynn Foundation in Dublin 15
- The First Intercultural Festival was hosted by the Language Centre in March 2007. The College showcased the cultures of Nigeria, Bosnia Herzegovina, India and Pakistan.
- U16 Girls Soccer Team reach the Leinster Finals in March 2007
- The College wins the National Robocup Award for designing a computer programme robot.
- The College launches the Reader Leader Programme allowing senior students to mentor junior students in reading.
- August 2007, Martina Feyzrakhmanova achieved top marks in the country in her Leaving Certificate with an amazing 8A1s.
- February 2008 Colm Mooney (Leaving Certificate Student) wins the All Ireland Pramerica Spirit of Community Award. Colm was honoured for his efforts in raising an awareness of Teen Cancer.
- Two first year students, Aodhán Peelo and Daire Boyle represent the College in the International Competition for Young Debaters at Oxford University.
- Eileen O’Rourke our first Deputy Principal is appointed as Principal of Setanta Community College and is succeeded by Carmel O’Neill as Deputy Principal.
- In September 2008, the Minister for Older People, Marie Hoctor T.D. launched the “Log on Learn” Programme in Castleknock Community College. This simple and user friendly programme was devised to engage older people in computer training. The programme is designed to buddy a transition year student with an older person from their community, giving both participants the opportunity to engage in cross-generation learning experiences
- The Primary School Gaelic League was launched in association with the local primary schools and TY students. Students from local primary schools compete in the league under the watchful eye of our TY students.
- Big Brother Big Sister mentoring programme was launched by Fóroige in the College in October 2008.
- March 2009, Castleknock Community College launches Green Week and invites The President of An Taisce, Eanna Ní Lamhna, to visit the College to speak with Junior Certificate students.
- Mr. Riechental, a survivor of the Bergen Belsen Concentration Camp visit the College in April 2009.
- The College wins the Award for Best Film Script at the 2009 CIAK Junior Film Festival.
- Castleknock Community College celebrates the tenth anniversary of Grandparents Day.
- The U14 Gaelic Team wins the Tom Quinlan Trophy beating St David’s Artane in the Final in May 2009.
- Ciara Gorman wins the Sean Dunne Short Story Competition and also took the National Title.
- June 2009, Tom O’Brien retires as Principal of Castleknock Community College after fourteen years service.
- John Cronin is appointed as Principal of the College in September 2009.
- Mr. John Hopkins is appointed Deputy Principal of the College in September 2009.
- December 2009 The U14 Gaelic Team wins the Division “A” Dublin Championship defeating St Benildus College in the final.
- The College celebrates Fifteen Years in the Community with a Concert in the Draiocht Theatre.
- Ciara Gorman & Aodhan Peelo win the Leinster Junior Debating Title in UCD
- History was made on Wednesday April 21st when CCC played its first ever Cricket fixture.
- The U-14 Cricket team played Colaiste Phadraig, Kilcock at North Kildare Cricket Grounds, captained by Thomas Anders. CCC won by 7 Wickets.
- In April 2010 Deirdre McGuane and Aodhan Peelo win the National Senior Debating title with an historic win in the Astra Hall in UCD.
- John Feighrey, Liam Holmes and Jack Conneely took part in the National Finals for the Special Olympics in Limerick in June 2010.
- Sporting success during Spring 2010 includes College Rugby team winning the U-15 Coolmine Cup and Girls’ U-16 Footballers being crowned Dublin Champions as well as Cross-country runner Claire Brennan(LC1) being crowned Leinster U-17 Champion, going on to represent the College in the National Finals.
- Deirdre McGuane (LC1) & Ellen Murphy (TY) compete against national winners from Scotland, England & Wales in an International Debating Mace at Glasgow University in May 2010.
- TY student, Aodhan Peelo was selected for the Irish World Schools Team to compete in the World Schools Debating Championships in Dundee in August 2011.
- Past- pupil & Dublin Footballer Ross McConnell returns to College with Sam Maguire following Dublin 2011 victory
- Senior student Paul Winters plays for Dublin in All-Ireland Minor Hurling Final in September 2011
- Delegation of Norwegian teachers visit the College to meet with students & teachers and to observe teaching in Irish classrooms in September 2011
- The College’s LCA students exhibit their work at a special promotional event hosted by Co. Dublin VEC in March 2012.
- April 2012 our Girls’ Basketball Cadettes Team reached the National Play-Offs after another great campaign throughout the year
- The College’s Rugby Team experienced victory by winning the Dublin 15 Junior Cup in May 2012.
- Aoife Begley Senior Debating Champions (Aodhan Peelo & Ciara Gorman) in 2012
- Matheson Ormsby Prentice National Junior Mace Debating Champion (Seán McGuane) in 2012
- Draíocht December 2012
- Junior Schools Debating Champions – Third Consecutive Win for CCC-(Chris McMahon & Aisling Tully) in 2012
- College student Aodhán Peelo on Irish team reaching quarter-finals of World Schools Debating Championships in South Africa January 2012 and again in Turkey, January 2013 when team reached semi-finals.
- Rebecca Armstrong & Aisling Tully amongst fourteen speakers representing Irish schools at International Competition for Young Debaters at Oxford University in May 2012.
- Stealing Shakespeare’s Pencil. In May 2012 The College was delighted with the success of TY students Nobukhosi Biyela, Heather Fitzpatrick and Niamh Hurley in the Young Poetry Competition and who will now have their poetry published in the inaugural Euroteen Anthology, entitled Stealing Shakespeare’s Pencil. The Euroteen Project encourages young people to express themselves through poetry and art. The first copy of Stealing Shakespeare’s Pencil published by Tigh Filí Publishers will be presented to President Michael D. Higgins on May 10th in Áras an Úachtaráin.
- Artistic Success. Second Year student Conor Barron distinguished himself with two major achievements this year. In 2012 he was placed second in the Walkers Global Art Competition and he came fifth in the National Toyota Dream Car Art Contest.
- Senior students Ciara Keegan & Joseph Gregory perform for President Higgins in the Áras on July 4th 2012
- A Special Remembrance Ceremony was held at our Rainbow Garden on Tuesday 23rd October 2012 to remember in particular deceased members of the College Community and their loved ones. We are delighted that through the efforts of parents, staff & students, we have this special place within the College grounds.
- February 2013 – Frankfurt Trip (LC1)
- In February 2013 senior students Chris McMahon and Ciaran Maguire were presented with certificates in DCU in recognition of their outstanding achievements in the 2012 Junior Cycle Business Studies Exams. The Awards were presented by the Business School in DCU recognising that both boys were ranked in the top 50 Business Studies students in Dublin in the 2012 Junior Cycle Business Studies Exam. Chris has also been selected by the Spanish government to take part in a 45 day trip to Europe & South America in June 2013 following his submission of an essay and an interview at the Spanish Embassy.
- February 2013 The Senior Business Mini Company Team wins the Fingal Enterprise Award for designing an App to teach students how to play the piano.
- January/February 2013 The Junior & Senior Camogie teams do the double by winning their respective Dublin championships.
- Paul O’Neill is selected as one of the finalist in the Doodle for Google competition – March 2013.
- March 2013, Senior Public Speaking team qualify for Grand Final of Mental Health Ireland Competition
- April 2013 the First Year Hockey Team win the Junior Dublin Final with a 2-1 win over Clontarf.
- June 2013 new extension to the college approved by Department of Education and Skills.