Allison Jillian Chao was last seen on surveillance video ... is a straight-A student entering her junior year at Mark Keppel High School and has no history of running away. She has made no contact ...

Alison Jillian Chao, 15, was last seen on Tuesday on ... Monterey Park in hopes that someone will recognize the Mark Keppel High School student. 'It's been very chaotic,' Annie told ABC 7.