High Schools   East Union High School 1700 North Union Rd., Manteca 95336   (209)858-7270 Manteca High School 450 East Yosemite Ave., Manteca 95336   (209)825-3150 Sierra High School 1700 Thomas St., Manteca 95337   (209)858-7410 Weston Ranch High School 4606 McCuen Ave., Stockton 95206   (209)938-6245 Calla High School 130 S. Austin Rd., Manteca 95336   (209)858-7230 New Vision Educational Center 4726 McCuen Ave., Stockton 95206   (209)938-6225 Manteca Day School 680 Mikesell St., Manteca 95336   (209)239-6282 Lindbergh Adult School 311 East North St., Manteca 95336   (209)825-3100 Lathrop High School 647 W. Lathrop Rd., Lathrop 95330   (209)938-6350