Friend Against Friend (Sweet Valley High #69)
Betrayed ...Andy Jenkins and Neil Freemount have  been best friends for years.  They hang out together, double-date, and  help each other math their homework.But bully Charlie Cashman  sets out to make life miserable for Andy, just because Andy is black.   First Andy finds trash in his locker.  Then his girlfriend is taunted,  and he is pushed around in the school parking lot.  Neil wants to help  his best friend, but suddenly Andy turns against him, and Neil doesn't  know why.  The two boys are about to face the greatest challenge of  their lives.  Can their friendship survive the test?