LA Daily News is reporting that the mother of late OZZY OSBOURNE guitarist Randy Rhoads has added $20,000 to the scholarship endowment she created more than 10 years ago at California State University, Northridge, as a tribute to her son, CSUN said.The endowment, now worth $45,000, is designed to offer financial aid to guitar students. Delores Rhoads founded and operates Musonia, a North Hollywood music school where her son began taking lessons at age 6. By age 14, Randy was performing with local bands, and at age 20, Randy and friends formed the heavy-metal band QUIET RIOT while he taught at his mother's school during the day. In 1979, Randy became Ozzy Osbourne's lead guitarist on his first two solo albums. But in 1982, Randy died in a plane crash while on tour with Osbourne. Since then, Delores has contributed a total of $75,000 to CSUN in his honor, creating the scholarship fund in 1993 and making donations to the school's International Guitar Research Archive.