Discover the Upper School

Upper School Open House

Join us on October 28, 2026, from 6–7:30 pm and discover how we create an inspiring and engaging high school experience. Learn about our programs and opportunities for students in grades 9–12. Register today and see how your child can thrive at GCS.

Please complete and submit this form to register for our Upper School Open House on Wednesday, October 28 from 6-7:30 pm.

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Two students, a girl on the left and a boy on the right, sit at a table outdoors. They are both wearing light blue, short-sleeved, polo shirts and a computer is open on the table.

Two students, a girl on the left and a boy on the right, sit and stand by a picnic table. They are wearing school uniforms and the Upper School building is behind them in the background.