Contact Us


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

:  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!

2016-2017 Colorado International School Staff


Ms. Antje Radtke, IB Coordinator (
Ms. Xiaoying Song, Parent Communication (
Ms. Kat Foley, Enrichment Program Director ( and STEM Coordinator (
Ms. Monica Chavez B. O’Farrill, IB PYP Coordinator ( and Preschool Director (
Mr. Paul Manga, Assistant Preschool Director (

English Program

Ms. Kat Foley: 4th t-8th Language Arts, Literature, Geography, Science, History, Social Studies, Math (
Mr. Masha Harsini: 4th-8th Grade Math Lab (also responsible for Farsi/Persian Program)
Ms. Carmen Stagg: 1st-3rd Language Arts, Literature, Geography, Science, History, Social Studies, Math (

French Program

Mr. Paul Manga. French Program Lead Teacher, Preschool-8th Teacher (
Ms. Charlotte Jeauneau, French Program Elementary Teacher (
Mr. Alex Ayité: P.E. Preschool-8th Teacher, CoIS P.E. Focal Point

German Program

Ms. Birgit Mann, German Program Lead Teacher and Preschool-8th Teacher (
Ms. Antje Radtke, German Program 4th -8th Teacher and Music Focal Point (
Ms. Margit Rees, Enrichment Program Teacher (

Mandarin Program

Ms. Xiaoying Song: Mandarin Program Lead Teacher, 4th -8th Teacher, Art Focal Point (
Ms. Lu He: Mandarin Program Preschool-4th Teacher (

Spanish Program

Ms. Monica Chavez B. O’Farrill: Spanish Program Lead Teacher, Spanish Program Preschool-8th Teacher (