Taggers hit Liberty High School on Avenue 12 and Road 36 in Madera Ranchos.
The crime happened sometime between the 4th of July and Monday.
The vandals left vulgar messages and drawings and at least one swastika on walls, windows and pillars.
Workers spent Tuesday trying to clean it off.
Anyone with information is asked to contact the Madera County Sheriff's Department or call Crime Stoppers at (559) 498-STOP.
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