What is ""اجتماع مدرسي رياضي"" in American English and how to say it?

Arabic

اجتماع مدرسي رياضي

اجتماع مدرسي رياضي-pep rally.svg
American English

pep rally

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How ""اجتماع مدرسي رياضي"" is said across the globe.