Try using http://www.SchoolAndHousing.com to answer these types of questions.
Based on property address, this site provides attendance area schools (Public, Private and Daycares) along with useful statistics and other information.
The Medallion Apts are located at 2500 Medallion Drive, Union City, CA 94587 and http://www.SchoolAndHousing.com shows the attending schools to be:
Tom Kitayama Elem, 841 API, 0.4 miles away
Cesar Chavez Middle, 733 API, 1 miles away
James Logan High, 735 API, 1.7 miles away
You can always call the New Haven Unified School District to confirm this.