The phrase "proficiency gap" means the difference between the level of skill or knowledge that someone should have and their actual ability. Full definition
Reduce proficiency gaps between different groups of students in all subjects by one - third over the next six years. (edweek.org)
Now is the time to assess whether addressing teaching talent alone is enough to close the student proficiency gaps exposed by the Common Core within approximately the next five years. (washingtonpost.com)
Identify from the list of schools ranked by proficiency gap points a number equal to 10 percent of the state's total Title I schools. (doe.virginia.gov)