Question: Fairdale High School is a high school operated by a school board that operates all but how many school in the county?

Context paragraphs:
Cathedral High School (Hamilton, Ontario): Cathedral High School is a public Roman Catholic high school in Hamilton, Ontario, under the administration of the Hamilton-Wentworth Catholic District School Board.  Cathedral High School dates back to 1912, when high school classes where offered to the youth of Hamilton by the Hamilton Separate School Board.  Classes were held in two rooms at St. Mary’s School, located on Mulberry Street.  By 1921, enrollment had increased significantly and the two rooms could no longer hold the amount of people.  The boys were soon moved to the upper floor of St. Patrick’s School on East Avenue and Main Street.  While the girls remained at St. Mary’s.  In 1925, the Separate School Board authorized the building of a new and larger building.

St. Thomas High School (Quebec): St. Thomas High School is a high school in the municipality of Pointe-Claire, situated in Quebec, Canada.  Originally a Roman Catholic foundation, the college is a member of the International Baccalaureate Organization's certified Middle Years Programme.  Saint Thomas High School is the second largest high school operated by the Lester B. Pearson School Board in Montreal.  It is second to only Lindsay Place High School, which is also located in Pointe-Claire.  For the 2008 school year, Saint Thomas High School ranked 22 out of all 466 schools in the province.

Alexander M. Patch American High School: Alexander M. Patch American High School (also known as "Patch American High School" or "Patch High School") was an English language high school on Patch Barracks in Stuttgart, Germany operated by DODEA (formerly known as DoDDS).  Opened in 1979; the students were largely military dependents whose sponsors were assigned to units of the Stuttgart Military Community, including Patch Barracks, Robinson Barracks, Panzer Kaserne, and Kelley Barracks.  The school was named after Alexander McCarrell Patch, a General in the United States Army during World War II.  From 1979-2006 the school operated for grades 7-12.  With the 1992 closure of Stuttgart American High School in Pattonville, Patch High School became the only DODEA (DoDDS) High School in the Stuttgart area.  After 2006 the school changed to 9th-12th due to projected increasing enrollment and middle schools created at nearby Panzer Kaserne and Robinson Barracks to be used by these students.  Patch High School officially closed June 30, 2015.  The newly built Stuttgart High School (Germany) on Panzer Kaserne will be the only DoDEA (DoDDS) high school in the Stuttgart area starting with the 2015-16 school year.

Montgomery Area High School: Montgomery Area High School is a diminutive public high school in Montgomery, Lycoming County, Pennsylvania.  It is the sole high school operated by the Montgomery Area School District.  Montgomery Area High School serves: the borough of Montgomery as well as Clinton Township, Brady Township, and Washington Township in Lycoming County.  The Montgomery Area School Board converted the high school to a joint junior and senior high school for 2014-15, due to low enrollment.

Jefferson County Public Schools (Kentucky): Jefferson County Public Schools (JCPS) is a public school district located in Jefferson County, Kentucky and operating all but one of the public schools in the county.  It is governed by an elected seven-member Board of Education which selects and hires a Superintendent who serves as the system's chief executive.

Ridge Community High School: Ridge Community High School or RCHS is a public high school located on the Davenport, Florida and Haines City, Florida Line.  RCHS was established in 2005 in Polk County.  It currently serves 2,600 students and has 106 teachers on campus.  Ridge Community High School is one of many schools with a separate 9th Grade campus with its own front office.  The main campus holds students in 10th, 11th, and 12th grade with some exceptions.  Ridge Community High School sits on 76 acre of land.  Ridge Community High School is zoned for Davenport and Haines City.  Ridge Community High School's rivals include Haines City High School, Lake Wales High School and others in Polk County.  The principal of RCHS is currently Russell Donnelly who replaced Sherry Wells, the acting principal between the school's opening in 2005 and 2015 and has a few assistant principals.  Ridge Community High School is part of the Polk County School Board.  RCHS's mascot is the Bolt, and the school motto is Once a Bolt, always a Bolt.

Santa Susana High School: Santa Susana High School is one of four public high schools located in the Simi Valley Unified School District in Simi Valley, California.  Built in 1970, the school campus was originally designed as a junior high campus formerly known as Sequoia Junior High School.  In June 1995, the Simi Valley School Board voted one junior high campus be converted into a magnet high school to accommodate the move of 9th graders into regular high school campuses, and all remaining junior high campuses be converted into middle schools.  The school board elected Sequoia Junior High over Hillside Junior High because of location, and in September 1996 it became Santa Susana High School.

Lakeview Secondary School: Lakeview Secondary School (LSS, Lakeview, formerly East End High School) is a former public and vocational high school operated by the Toronto Board of Education (later merged with the Toronto District School Board) from 1967 until 1989.  Founde in 1967, the current building was built in 1972.  The Lakeview property, as of January 2015, remains currently owned by the Toronto District School Board.

Fairdale High School: Fairdale High School is a high school located in the Fairdale area of Louisville, Kentucky.  It is part of the Jefferson County Public Schools.  As of the 2013–14 school year, there were 1,804 students at the school.

Mimico High School: Mimico High School was a former public secondary school operated from 1924 to 1988 by the Etobicoke Board of Education as the first high school.  In 1993, John English Junior Middle School, which was founded in 1884, took over the building.  The school operated by the Toronto District School Board and it is named after a Mimico principal.

Supporting paragraphs: Fairdale High School Jefferson County Public Schools (Kentucky)
Answer: one