Question: Were both Escobedo v. Illinois and Vernonia School District 47J v. Acton cases about drug testing?

Context articles: Vernonia School District
National Treasury Employees Union v. Von Raab
Arlington Elementary School District
Vernonia School District 47J v. Acton
Board of Education v. Earls
School District 47 Powell River
Escobedo v. Illinois
Acton-Boxborough Regional High School
Elliot R. Peters
Danny Escobedo

The Vernonia School District is a public school district that serves students in the communities of Vernonia and Mist in the U.S. state of Oregon.
 Vernonia Elementary School, Vernonia Middle School, and Vernonia High School are contained in separate wings of a single building in Vernonia constructed on high ground after floods in 1996 and 2007 severely impacted the city.
 The new building was built above the floodplain to prevent future flooding.
National Treasury Employees Union v. Von Raab, 489 U.S. 656 (1989) , was a United States Supreme Court case involving the Fourth Amendment and its implication on drug testing programs.
 The majority of the Court upheld the drug testing program in United States Customs Service.
Arlington School District 47 is a public school district based in Maricopa County, Arizona.
 It feeds into Buckeye Union High School District.
Vernonia School District 47J v. Acton, 515 U.S. 646 (1997) was a U.S. Supreme Court decision which upheld the constitutionality of random drug testing regimen implemented by the local public schools in Vernonia, Oregon.
 Under that regimen, student athletes were required to submit to random drug testing before being allowed to participate in sports.
 During the season, 10% of all athletes were selected at random for testing.
 The Supreme Court held that although the tests were searches under the Fourth Amendment, they were reasonable in light of the schools' interest in preventing teenage drug use.
Board of Education v. Earls, 536 U.S. 822 (2002) , was a United States Supreme Court case in which the Court upheld the constitutionality of mandatory drug testing by public schools of students participating in extracurricular activities.
 The legal challenge to the practice was brought by two students, Lindsay Earls and Daniel James, and their families against the school board of Tecumseh, Oklahoma, alleging that their policy requiring students to consent to random urinalysis testing for drug use violated the Fourth Amendment to the United States Constitution.
School District 47 Powell River is a school district in British Columbia.
 It covers the community of Powell River as well as Texada Island.
 The current Powell River School Board serves until December 2014.
 The board is composed of five elected trustees.
 They are Steve Formosa, Mary James, Aaron Reid, Jeanette Scott (chair) and Doug Skinner.
Escobedo v. Illinois, 378 U.S. 478 (1964), was a United States Supreme Court case holding that criminal suspects have a right to counsel during police interrogations under the Sixth Amendment.
 The case was decided a year after the court held in "Gideon v. Wainwright", 372 U.S. 335 (1963) that indigent criminal defendants had a right to be provided counsel at trial.
Acton-Boxborough Regional High School (ABRHS) is an open enrollment high school in Acton, Massachusetts.
 A part of the Acton-Boxborough Regional School District, it serves the Massachusetts towns of Acton and Boxborough and has students in grades 9 through 12.
 It is situated downhill from the Raymond J. Grey Junior High School, at 36 Charter Road in Acton.
 Raymond J. Grey Junior High School occupies the facility that, until 1973, was the high school.
 ABRHS underwent an $80 million renovation and expansion in 2005.
Elliot R. Peters is a trial attorney at San Francisco law firm Keker, Van Nest & Peters LLP, who frequently works on cases of national significance.
 He led the defenses of internet activist Aaron Swartz and cyclist Lance Armstrong.
 He represented the Major League Baseball Players Association in successfully challenging DOJ seizures of baseball players’ drug testing records, in the seminal computer search case, "United States v Comprehensive Drug Testing", 579 F.3d 989 (2009).
 He has also defended financier Frank Quattrone, securities litigator William Lerach and CEO Bruce Karatz.
 He has represented top international law firms defending malpractice claims and technology companies defending intellectual property claims.
 Elliot has been named “Attorney of the Year” in California three times, twice for freeing indigent men, serving life sentences for murder, but whose convictions were wrongful and who were actually innocent.
Danny Escobedo (born c. 1937) was a Chicago petitioner in the Supreme Court case of "Escobedo v. Illinois", which established a criminal suspect's right to remain silent and have an attorney present during questioning.
 This case was an important precedent to the famous "Miranda v. Arizona" decision.