Question: The man who built the and operated the Tucson area locations of the largest restaurant chain in the U.S. throughout the 1960s and 1970s graduated from what high school?

Context paragraphs:
Howard Johnson's: Howard Johnson's, or Howard Johnson, is an American chain of hotels, motels and restaurants located primarily throughout the United States and Canada.  Founded by Howard Johnson, it was the largest restaurant chain in the U.S. throughout the 1960s and 1970s, with more than 1,000 combined company-owned and franchised outlets.

Edge High School: Edge High School is a public high school in Tucson, Arizona, operated by The Edge School, Inc.  It operates two campuses in the Tucson area.  Edge Himmel Park opened in 1985 and is named after the nearby city park.  It is the largest campus and home to the administrative offices.  Edge Northwest opened 2004.

El Meson Sandwiches: Meson Sandwiches is a fast-casual restaurant chain that primarily sells sandwiches, salads and breakfast items, which it serves all day long.  Based in Mayagüez, Puerto Rico El Meson Sandwiches is Puerto Rico’s largest restaurant chain.  In 2012 it was named one of the world’s top fast food chains by "Travel & Leisure" magazine.

KFC in China: KFC is a fast food restaurant chain that specializes in fried chicken and is China's largest restaurant chain.  KFC restauruants in China are owned or franchised by Yum China, a restaurant company that also owns the Pizza Hut and Taco Bell chains in China and was spun off from Yum!  Brands in 2016.

KWXL-LP: KWXL-LP (98.7 FM) is a high school radio station broadcasting a variety format.  Licensed to Tucson, Arizona, United States, the station serves the Tucson area.  The station is currently owned by the Tucson Unified School District.  KWXL-LP is Tucson's only high school radio station.  It is also a news radio station for students who attend Pueblo High Magnet School.  Students broadcasting over the radio station are enrolled in a "Writing/Reporting for Broadcasting" class with instructor Sarah Walson.  Originally started by Douglas Potter, who retired in 2006.  Listeners can also find FM 98.7, KWXL on iTunes.

VIP's: VIP's, alternatively written Vip's, is a defunct restaurant chain in the Western United States that operated from 1968 until the late 1980s, based in Salem, Oregon.  With more than 50 locations, it was once the largest restaurant chain based in Oregon.  It was a Denny's-style restaurant, a type that was commonly known at that time as a "coffee shop" but is now more commonly known as a casual dining restaurant.  Most restaurants were located near freeways and were open 24 hours.  At its peak, the chain had locations in five states: Oregon, Washington, Idaho, Nevada and northern California.

Front Burner Brands: Front Burner Brands is a Tampa, Florida based restaurant company.  Their brands include GrillSmith, with six Tampa area locations, The Melting Pot (restaurant), a fondue themed restaurant with 143 locations as of 2011, and Burger 21 an upmarket burger chain.  Bob Johnston is the company's Chief Executive Officer.  The GrillSmith group of restaurants was rebranded in 2011 as refined-casual and chef-inspired.

Robert Sarver: Sarver was born to a Jewish family in Tucson, the son of Irene and Jack Sarver.  His father was a prominent Tucson businessman, banker and hotel developer (the elder Sarver built the Aztec Inn, the Plaza International Hotel (now an Aloft Hotel) at Speedway and Campbell in Tucson in the early 1970s, built and operated the Tucson area Howard Johnson's locations, and headed a local savings and loan).  Jack Sarver died of a heart attack in 1979; Robert Sarver would eventually donate to his alma mater, the University of Arizona, funds to its heart research center, which in 1998 was renamed the Sarver Heart Center in honor of his father.  At age 16, he went to work for his father's company, American Savings and Loan.  Sarver is a 1979 graduate of Sabino High School in Tucson and a 1982 graduate of the University of Arizona with a bachelor's degree in business administration.  In 1983, Sarver became a certified public accountant.

St-Hubert: St-Hubert BBQ Ltd is a chain of Canadian casual dining restaurants best known for its rotisserie chicken.  St-Hubert once had a presence throughout eastern Canada, but it now has few locations outside its home province of Quebec, where it remains a dominant chain.  Other locations are found in Ottawa, Cornwall, Rockland and Hawkesbury in Ontario, and Edmundston, Bathurst, Moncton and Fredericton in New Brunswick.  St-Hubert is the 16th largest restaurant chain operating in Canada.

KFC in Japan: KFC (the name was originally an initialism for Kentucky Fried Chicken) is a fast food restaurant chain that specializes in fried chicken and is headquartered in Louisville, Kentucky, United States (US).  It is the world's second largest restaurant chain (as measured by sales) after McDonald's, with 18,875 outlets in 118 countries and territories as of December 2013 .  The company is a subsidiary of Yum!  Brands, a restaurant company that also owns the Pizza Hut and Taco Bell chains.

Supporting paragraphs: Robert Sarver Howard Johnson's
Answer: Sabino High School