Standards-Based Grade (Mastery 1-4)
Weighted overall mastery from per-standard levels (1-4) and optional major / supporting / additional priority. Letter equivalent per AAS / NWEA conversion; school registrar governs the transcript grade.
Formula and source
Per row: parse '<standard> <level 1-4> [major|supporting|additional]'. priority weight: major=3, supporting=2, additional=1 (Achieve the Core focus guidance). overall = sum(level * weight) / sum(weight). Letter band: 3.5+ A; 3.0+ B; 2.5+ C; 2.0+ D; below D F.
Marzano + Heflebower, 'A Handbook for Developing and Using Proficiency Scales' (2014). Achieve the Core 'focus by grade level' major / supporting / additional cluster guidance. AAS / NWEA published 4-point-to-letter conversion convention.
Audience
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