Avant STAMP Monolingual is STAndards-based Measurement of Proficiency for native speakers. Avant developed the STAMP Monolingual assessment with the same rigorous standards and assessment philosophy as Avant STAMP.  An increasing number of districts have chosen Avant STAMP assessments as their preferred test to qualify students for their State and Global Seal of Biliteracy programs. Verify qualifications for State Seal of Biliteracy for your state here.