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Colorado International School
4100 E. Iliff Avenue
Denver, CO 80222

Phone
:  303-282-6666
Fax:       303-759-5035
Office Hours: 9:00AM – 12:00PM M-F
School Hours: 8:00AM – 5:00PM M-F

Colorado International School is located in the University Hills neighborhood of Denver.  Close to intersection of Colorado Blvd and I-25.  We are convenient to most Denver locations and close to light rail.

If you are interested in attending CoIS, please contact us via the Information Request Page for best service and attention. Thank you!

Administration & Office Staff

  • Mr. Gusten Lutter, Office Manager, coisfrontoffice@gmail.com
  • Ms. Griselda Rodriguez, IB Coordinator and Preschool Director, coispreschool@gmail.com
  • Ms. A. Lake-Raygada, IB PYP Coordinator, coisibpyp@gmail.com
  • Mr. Chris Deaser, Business Manager, coisaccounts@gmail.com
  • Ms. Marzia Mauffrey, STEM Coordinator, coistechnology@gmail.com
  • Attention Parents:  Send attendance updates to coisattendance@gmail.com

Mandarin Program

  • Ms. Xiaoying Song, Mandarin Program Lead Teacher
  • coismandarin@gmail.com

English Program

  • Mr. Gusten Lutter, English Program Lead Teacher
  • coisenglish@gmail.com

French Program

  • Mr. Paul Manga, French Program Lead Teacher
    coisfrench@gmail.com

Spanish Program

  • Ms. Griselda Rodriguez, Spanish Program Lead Teacher
  • coisspanish@gmail.com

German Program

  • Ms. Birgit Mann, German Program Lead Teacher
    coisgerman@gmail.com

Other Program Contacts