Question: What school district is the high school Christie Ambrosi attended part of?

Context paragraphs:
Blue Valley Northwest High School: Blue Valley Northwest High School (BVNW) is a high school in Overland Park, Kansas, United States.  It is part of the Blue Valley Unified School District.  Blue Valley Northwest is one of several schools located within the city limits of Overland Park.  In the 2009 Newsweek ranking of the top 1,500 high schools in the United States, Blue Valley Northwest was ranked #364, the highest in the district and the state.  The school has been ranked in the top 700 since 2005.  In 2014, Blue Valley Northwest was selected as one of the six finalists for the first annual Race to the Top High School Commencement Challenge, sponsored by the Department of Education under the Obama administration.

Boynton High School: Boynton High School is a secondary school located in San Jose, California and is a continuation school for the Campbell Union High School District.  Between 1990 and 2002 when Boynton High School continuation students attended what was then Blackford High School.  Blackford had been a traditional high school before 1991 when it was closed.  After a minor disagreement amongst board members of the Campbell Union High School District, they agreed to rename the continuation high school to Boynton High School, and established a new building on the same lot as Blackford.  The resources of the Blackford High School campus were being shared, and needed to be renovated in order to lease the campus to another school (the former Blackford High School campus is now occupied by neighboring Harker Middle School.) .

Lovejoy High School (Lucas, Texas): Lovejoy High School is a public high school in Lucas, Texas in south central Collin County.  It is the only high school of the Lovejoy Independent School District serving grades 9-12 and classified as a 5A school by the UIL.  Lovejoy High School serves most of the cities of Lucas, most of Fairview, and a small portion of Allen.  Students from outside the district may transfer to Lovejoy High School for a tuition fee.  Until the Fall of 2006, all high school students zoned to Lovejoy Independent School District attended nearby Allen High School.  The school graduated its first senior class in 2010.  In 2013, the school was rated "Met Standard" by the Texas Education Agency.

Eastern High School (Michigan): Eastern High School is a public high school in Lansing, Michigan as part of the Lansing School District.  Eastern International Baccalaureate Magnet High School is the only high school in mid-Michigan authorized to offer students the opportunity to earn a prestigious International Baccalaureate Diploma.  Eastern also has the second largest alumni association in the United States.  It is located on the city's east-side on Pennsylvania Avenue, one block north of Michigan Avenue.  The building was connected with former Pattengill Middle School next to Sparrow Hospital.  In 2007, Sparrow purchased the Pattengill property to create a parking lot.  With the deconstruction of Pattengill Middle School, Lansing Eastern became the oldest operational school in the Lansing School District.  It opened in 1928 as the second high school in the city.  The athletic teams were named Quakers because the school was located on Pennsylvania Avenue and a Society of Friends (Quaker) meeting house was located across the street.  In March 2012 the Lansing School District announced that Eastern would house 7-12 grades beginning in the 2012-2013 school year.  On Jan. 20, 2016, the Lansing School Board voted to sell the school to the Edward Sparrow Hospital Association for approximately $2.5 million.  Students are to be relocated to Pattengill Middle School within five years.

Steilacoom High School: Steilacoom High School (or SHS) is a public high school in Steilacoom, Washington, United States and is part of the Steilacoom Historical School District.  It is the oldest, and to date the only, high school in the school district.  Prior to its establishment, students attended grades 9-12 in the neighboring Tacoma School District and Clover Park School District.  SHS was established in 1981 for grades 9 and 10, with grades 11 and 12 starting in the following two years.  The facility underwent a $23 million modernization and expansion in 2007-09.

Lincoln-Way West High School: Lincoln-Way West High School or LWW, is a public four-year high school located about 1.5 miles south of Lincoln Highway near the intersection of Gougar Rd and the Illinois Highway in New Lenox, Illinois, a southwest suburb of Chicago, Illinois, in the United States.  It is the part of Lincoln-Way Community High School District 210, which also includes Lincoln-Way Central High School, Lincoln-Way East High School, and formerly Lincoln-Way North High School.  Students living within the Lincoln-Way boundaries of Liberty Junior High in New Lenox School District 122 and Manhattan Junior High in Manhattan School District 114 the Lincoln-Way boundaries of Union school district attend Lincoln-Way West.  The student body makeup is 53 percent male and 47 percent female, and the total minority enrollment is 11 percent.  As of 2013, there are 1,280 students enrolled, with 66 full-time teachers, creating a 19:1 student to teacher ratio.

Christie Ambrosi: Christie Ambrosi (born December 21, 1976) is an American softball player and Olympic champion.  She attended high school at Blue Valley Northwest High School in Overland Park, Kansas.

Rolling Meadows High School: Rolling Meadows High School, or RMHS, is a public four-year high school located in Rolling Meadows, Illinois, a northwest suburb of Chicago, Illinois, in the United States.  It is part of Township High School District 214, the second largest high school district in Illinois, after Township High School District 211.  The other five schools include Buffalo Grove High School, Elk Grove High School, John Hersey High School, Prospect High School, and Wheeling High School.  It serves primarily central and east Rolling Meadows (east of Route 53), a significant part of Arlington Heights and a small part of Mount Prospect.  Its feeder schools are South Middle School, Holmes Junior High School, Carl Sandburg Junior High School, and Our Lady of the Wayside, a private Catholic school.

Powdersville High School: Powdersville High School is a public high school in Powdersville, South Carolina, a suburb of Greenville located in Anderson County.  Powdersville High School, one of three high schools in Anderson School District One, first opened in August 2011.  The school started with 265 student in grades 9-10.  Prior to the opening of Powdersville High School, students who lived in the Powdersville area attended Wren High School.  However, due to growth in the Powdersville area, Anderson School District 1 voted in 2008 to build a high school for Powdersville.  In 2013-2014, Powdersville High School enrollment was around 750 students in grades 9-12.  Now, in 2015-2016 school year, Powdersville has an enrollment of around 840 students attending.  The school also held its first graduation on May 30, 2014.  The first ever graduating class to finish all 4 years at PVHS, (class of 2015) had an astonishing 96.2 graduation rate, one of the highest in the state.

United Senior High School (Illinois): United High School or UHS, is a public four-year high school located at 1905 100th Street near Monmouth, Illinois, a city of Warren County, Illinois, in the Midwestern United States.  UHS is part of United Community Unit School District 304, which also includes United Junior High School, United North Elementary School, and United West Elementary School.  Despite the Alexis United misnomer sometimes used to describe the high school, the campus is actually located 2 miles east of Monmouth, IL, though the district's north campus and one of the elementary schools is located in Alexis, Illinois.  The misnomer is due to the district office previouly being located in Alexis, Illinois.  It has since been moved to the high school campus.  The school serves a mixed city fringe, village, and rural residential community on the outskirts of the city of Monmouth, in the villages of Alexis, Kirkwood, Little York, North Henderson, and the unincorporated communities of Cameron and Gerlaw.  Much of the school district is within the Galesburg micropolitan statistical area.  United High School was formed by the consolidation of Alexis High School and Monmouth Warren High School in 2004.  In 2007 Monmouth Yorkwood High School deactivated and was annexed into United High School.

Supporting paragraphs: Christie Ambrosi Blue Valley Northwest High School
Answer: Blue Valley Unified School District