Grade Inflation Injustice

Why’s do we allow this to happen?
Grade inflation has drifted onwards and upwards for years. Grade inflation distorts  achievement, potential, and career development for all stakeholders. 
Of course teachers will be tempted to be over generous with their assessments because their very livelihoods depend on student performance
Why, why, why …. I cannot continue with this familiar tune  ….. will someone grip  grade inflation and avoid  futures being damaged