sentences:  On July 1, 2011, William Fish became the new principal of Norwell High School, replacing Matthew Keegan, who had been serving the school since 2006.The school's administration includes assistant principals Matthew Marani and Jennifer Greenberg.The school's administration also includes four guidance counselors 
  
  Toward the end of the 1980s Norwell High School lowered their grading system, as the numbers were higher than standard grading systems.