* Which Warren? There are many towns and schools named Warren. You need to specify the exact high school you're interested in (e.g., Warren High School, Warren Township High School, etc.) and its location (state).
* The year: SAT score distributions change from year to year.
Once you provide this information, you might be able to find the data on the school's website, a state education department website, or through a college admissions resource like Niche or College Board (though the latter is less likely to have granular data for individual schools).