Las Vegas Sun

March 28, 2024

Science teacher Sergio Lopez leads a science proficiency exam tutoring session for seniors at Chaparral High School in Las Vegas on Monday, April 23, 2012. Seniors have one more chance this school year to pass the proficiency exams, which are mandatory for graduation.

Leila Navidi

Science teacher Sergio Lopez leads a science proficiency exam tutoring session for seniors at Chaparral High School in Las Vegas on Monday, April 23, 2012. Seniors have one more chance this school year to pass the proficiency exams, which are mandatory for graduation.