From the event website:
"This mathematics festival is for 5th-8th graders. However, 5th graders must be in the San Mateo-Foster City School District and 6th-8th Graders must be enrolled at Bayside S.T.E.M. Academy. Students MUST also have a parent chaperone(s). Festival will take place 10:00am - 12pm on Saturday, October 8, 2016 at the Bayside S.T.E.M. Academy, located at 2025 Kehoe Ave, San Mateo, CA. This is NOT a drop-off event. Chaperone attendance is required with each registered student. Registration is non-refundable. Scholarships for the festival are available if the festival registration fee is a financial hardship."
For more information, see the event website.