From your feedback, we revised the chart so assessment AS, OF, and FOR learning was clarified for each of the terms.
Individualization involves assessment OF learning. This is where summative assessment is grade-based and involves testing to confirm what learners know and do not know.
Differentiation involves assessment FOR learning and OF learning. This is assessment that involves time-based testing where teachers provide feedback to advance learning.
Personalization involves assessment AS learning, FOR learning, and a minimal OF learning. This is where teachers develop capacity so learners become independent learners who set goals, monitor progress, and reflect on learning. Assessments are based on mastery.
What most educators would call “subjects” or “disciplines,” Jeff Hopkins, principal of the Pacific School of Innovation and Inquiry, regards as “silos” when they restrict the scope of learning and nodes of a knowledge network when they serve as points of interconnection.