Fairfax County school officials gained little ground this week in selling parents on a high school redistricting plan that would send more students to an underpopulated but less-affluent high school in the western end of the county.

Calls to scuttle the entire proposal were echoed Wednesday at a public forum in Oakton, where residents overwhelmingly railed against the proposition to expand the student body of South Lakes High School in Reston with chunks of surrounding districts.