Question: When was the earliest film of High School and The Thorn in the Heart shot?

Passages:
Stuart Hall High School is an all boys college-preparatory high school located in San Francisco's Pacific Heights district.  Stuart Hall High School is a relatively new school, opening in the fall of 2000.  Together, Stuart Hall High School, Convent of the Sacred Heart High School, Convent Elementary, and Stuart Hall for Boys, is part of an international network of schools known as the Schools of the Sacred Heart. High School is a 1968 American documentary film directed by Frederick Wiseman that shows a typical day for a group of students at Northeast High School in Philadelphia, Pennsylvania.  It was one of the first direct cinema (or cinéma vérité) documentaries.  It was shot over five weeks in March and April 1968.  The film was not shown in Philadelphia at the time of its release, due to Wiseman's concerns over what he called "vague talk" of a lawsuit. <P0-S0> Robertson High School (RHS) is a public senior high school in Las Vegas, New Mexico. <P0-S1>  The school is part of the Las Vegas City Schools District in former East Las Vegas. <P0-S2>  The building dates from about 1945, when it was known as Las Vegas High School. <P0-S3>  The school was renamed Las Vegas Robertson High School in 1958, after the old Las Vegas High School burned down and a new building was constructed. <P0-S4>  W. J. Robertson had been the Superintendent of the Las Vegas City Schools since 1941 when he suffered a fatal heart attack on November 26, 1956 at the age of 55. <P0-S5>  Mr. Robertson, born in Kansas on November 3, 1901 also served as Principal at Las Vegas High School for many years prior. <P0-S6>  The colors of RHS are red and white, their mascot is the Cardinal. <P0-S7>  The enrollment currently stands at 607. <P3-S0> Mercy Cross High School was a private, Roman Catholic high school in Biloxi, Mississippi, founded in 1981. <P3-S1>  It was the merger of two of Biloxi's most iconic high schools, Sacred Heart High School and Notre Dame High School. <P3-S2>  Sacred Heart was the all girls school while Notre Dame was the all boys school. <P3-S3>  Mercy Cross was the co-ed merger of the two. <P3-S4>  The name, Mercy Cross, was derived from the Sisters of Mercy and the Brothers of the Holy Cross who taught students at schools in the diocese for decades. <P3-S5>  Feeder schools included Nativity BVM Elementary, Our Lady of Fatima Elementary, Sacred Heart Elementary, and St. Alphonsus Elementary. Jiashan Senior High School (Chinese: 嘉善高级中学), formerly known as Jiashan County Junior High School, Jiashan County First Junior High School, and Jiashan Second High School, was founded in September, 1926.  It is the earliest established high school in Jiashan County, and is a key high school in Zhejiang Province.  In August, 2001, the school was relocated to a new site, 318 Jiashan People Ave., and was renamed Jiashan Senior High School. The Thorn in the Heart (French: "L'épine dans le coeur" ) is a 2009 French documentary film directed by Michel Gondry.  It was given a special screening at the 2009 Cannes Film Festival and was also screened at the Sheffield Doc/Fest. Miami Senior High School is a public high school located at 2450 SW 1st Street in Miami, Florida, United States, and operated by Miami-Dade County Public Schools.  Founded in 1903, it is the oldest high school in Miami-Dade County.  The school building is famous for its architecture and is a historic landmark.  Miami Senior High School has a rich alumni base, with many graduates of the high school going on to varied, prominent careers.  The high school originally served the earliest settling families of Miami in the first half of the 20th century.  By the late 1960s, with an increase in Miami's population, its student body grew at a fast pace. Stuart Hall for Boys is a private Roman Catholic school located in San Francisco, California, and is part of the Schools of the Sacred Heart network.  Founded in 1887 as an independent, Catholic school, Schools of the Sacred Heart San Francisco carry on the educational mission of the Religious of the Sacred Heart.  It is associated with Stuart Hall High School, Convent of the Sacred Heart Elementary School and Convent of the Sacred Heart High School.  The schools are fully accredited by the Western Association of Schools and Colleges, the California Association of Independent Schools and the Network of Sacred Heart Schools and receive no financial support from either the Roman Catholic Church or the Society of the Sacred Heart. William R. Boone High School is a public high school in Orlando, Florida, United States.  Built in 1952, the school is one of twenty high schools in the Orange County Public Schools system, created to accommodate the growing number of students at Orlando High School.  The plan involved building two high schools, Orlando North and Orlando South, to take the place of Orlando High School and convert the old high school facilities into what is now Howard Middle School.  The last principal of Orlando High School, William R. Boone, died of a heart condition before the two new schools were opened, so the school board dedicated one of the high schools in his memory, then christened Orlando North as Edgewater High School after its surrounding community. Sacred Heart Catholic High School is a secondary school of the Ottawa Catholic School Board in Ottawa, Ontario Canada.  It serves as a middle school and also as a high school, having classes from grades seven to twelve.  The team name is the Sacred Heart Huskies with the colours white, red and black.  Some of Sacred Heart's feeder schools include: Guardian Angels Catholic Elementary School, Holy Spirit Catholic Elementary School, St. Phillips Catholic Elementary School, St. Stephen's Catholic Elementary school, Sittsville Public School and Westwind Public School, among others.  The school is run in the district of John Curry the local trustee of zone 1.  Sacred Heart is the largest high school in Ontario according to student population.

Supporting sentences:
 It was one of the first direct cinema (or cinéma vérité) documentaries.  It was shot over five weeks in March and April 1968. The Thorn in the Heart (French: "L'épine dans le coeur" ) is a 2009 French documentary film directed by Michel Gondry.