OC Math Circle (OCMC) will host AMC 10/12 A in-person this year. Students must be grade 10/12 or below and also under 17.5/19.5 years of age on the day of the competition in order to register. The early registration fee is $25, ending Sep.15th. The regular registration fee is $35, ending Oct.15th. The late registration fee is $45, ending Oct.31st.