Great question that many owners/buyers want to know before committing to a neighborhood. Since Leimert Park is in the City of Los Angeles. You can start with the LAUSD.net website. Once you have all the schools you need to connect with and/or the neighborhood you're in, don't just rely on the website, actually call the school. They can address which dividing lines a school is or is not in. You'd be surprised how one side of the street does or doesn't incorporate certain properties. There have been many homeowners who didn't do their homework before they got this easily accessible information.
Happy House Hunting,
Keller Williams Realty-Hollywood Hills