New York Schools
- Chapel Field Christian Schools
- Chapin School
- Chappaqua Central School District
- Charles D'amico High School
- Charles H Dyson School Of Applied Economics And Management
- Charles O Dickerson High School
- Charles W Baker High School
- Charlotte High School
- Charter School For Applied Technologies
- Chatham High School
- Chatsworth Avenue School
- Chautauqua Institution
- Cheektowaga Central High School
- Cheektowaga Central School District
- Cheektowaga Sloan Union Free School District
- Chelsea Grammar School
- Chelsea High School
- Chess In The Schools
- Chester Academy
- Chesterton Academy Of Buffalo
- Chinatown Manpower Project
- Chittenango High School
- Christ The King Regional High School
- Christ The King Seminary
- Christian Brothers Academy
- Christian Brothers Academy
- Christie's Education
- Christopher Columbus High School
- Church Street School For Music And Art
- Churchill School And Center
- Churchville Chili Central School District
- Cicero – North Syracuse High School
- Circle In The Square Theatre School
- City As School
- City College Academy Of The Arts
- City College Center For Discovery And Innovation
- City College Of New York
- City Honors School
- City Knoll Middle School
- City Polytechnic High School Of Engineering, Architecture, And Technology
- City School District Of Albany
- City School District Of New Rochelle
- City University Of New York
- City And Country School
- Civic Leadership Academy
- Clara Barton High School
- Claremont International High School
- Clarence High School
- Clarkson University
- Clarkstown Central School District
- Clarkstown High School North
- Clarkstown High School South
- Claverack College
- Clayton A Bouton High School
- Cleary School For The Deaf
- Cleveland Hill High School
- Cleveland Hill Union Free School District
- Clinton Community College
- Clinton High School
- Clyde–savannah Central School District
- Clymer District School No 5
- Cobalt Studios
- Cobble Hill School Of American Studies
- Cobleskill Richmondville Central School District
- Cochran School Of Nursing
- Cohen Children's Medical Center
- Cohoes High School
- Cold Spring Harbor Jr Sr High School
- Colgate Rochester Crozer Divinity School
- Colgate University
- Collaborative Arts Middle School
- Collaborative Arts Project 21
- College Point Collaborative
- College Of Arts, Sciences And Engineering
- College Of Insurance
- College Of Mount Saint Vincent
- College Of Nanoscale Science And Engineering
- College Of New Rochelle
- College Of Staten Island
- College Of Staten Island High School For International Studies
- Collegiate Institute For Math And Science (cims)
- Collegiate School
- Collegiate Science And Technology Entry Program At Syracuse University
- Colonie Central High School
- Colored Music Settlement School
- Colton Pierrepont Central School
- Columbia Business School
- Columbia College
- Columbia Graduate School Of Architecture, Planning And Preservation
- Columbia Graduate School Of Arts And Sciences
- Columbia Grammar & Preparatory School
- Columbia High School
- Columbia Secondary School
- Columbia Secondary School
- Columbia University
- Columbia University College Of Dental Medicine
- Columbia University Committee On Global Thought
- Columbia University Department Of Electrical Engineering
- Columbia University Department Of Physics
- Columbia University Gertrude H Sergievsky Center