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Upper School Admissions

If you have questions about admission to Principia Upper School, please contact Jordan Poznick at or 314.514.3194.

Principia admits eligible, diploma-seeking students able to fully participate in our dynamic, learning community. Students who turn 19 prior to July 1 of their senior year are ineligible for admission. Transfer students need to acquire sufficient credits to meet graduation requirements. Applicants must be free from the use of alcohol, tobacco, vaping, and illegal substances of any type and from engagement in premarital sexual activities. Principia administers all programs without regard to gender, race, color, sexual orientation, or national or ethnic origin. We appreciate and celebrate diversity and individuality throughout our student body.

International Students

International applications are closed for the 2022-23 academic year.

International students seeking a high school diploma and who regularly attend a Christian Science Sunday School are invited to apply to the Upper School (grades 9–12).

Living that amounts to anything is the kind of living that turns other people to God. If our lives serve this purpose, then our living is worthwhile.

Education at The Principia, p. 125

“Your child should not just survive high school but thrive in it. I look forward to sharing with you what makes Principia a place of growth and opportunity.”

Jordan Poznick
Senior Associate Director of Admissions Upper School