Sunday is the last day of summer vacation for more than a hundred thousand San Diego students as San Diego Unified and other school districts prepare to start on Monday.

More than 111,000 students in San Diego Unified, the county’s largest district by far, are heading back for the 2017-2018 school year. Most other districts and private schools also start on Monday.

Officials said the San Diego Unified class of 2018 will be the third to graduate under rigorous new standards that require students to complete the sequence of courses necessary to apply to a University of California or California State University campus.

Local retailers are experiencing the usual rush for school supplies. Walmart said it expected a rush this weekend as parents help their children prepare for school.

“A lot of parents do last-minute back-to-school shopping,” said Tiffany Wilson, director of communications for the retailer in Orange County. She urged parents to check online lists of supplies that teachers recommend.

Classes also start Monday for San Diego State University and Cal State San Marcos, where  a record 17,000 students are expected– the highest enrollment in the university’s 27-year history.

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