How does ongoing formative assessment support differentiation during instruction?

• A. It is only used at the end of a unit.
• B. It provides immediate data on understanding, guiding adjustments in grouping, task difficulty, supports, and feedback.
• C. It provides immediate data only to record for portfolios.
• D. It has no impact on instruction.

Answer: (B)

Ongoing formative assessment is about checking understanding as learning happens and using that information to tailor instruction for each learner. When you have timely data on what students know and where they stumble, you can make real-time decisions that support differentiation: regroup students so those at similar readiness work together, adjust the difficulty of tasks, provide the right supports or scaffolds, and give targeted feedback to move learning forward. This immediate responsiveness is what makes formative assessment so powerful during instruction, because it directly shapes what you do next to meet diverse needs.

For example, in a reading lesson, quick checks might reveal that some students have mastered the strategy while others need guided practice with explicit prompts. The teacher can reorganize small groups, offer a more challenging text to the ready learners, or provide additional guided practice and prompts to those who need them, followed by feedback that guides next steps.

The other options miss this essential point: using assessment only at the end of a unit, treating data as something to record for portfolios, or claiming it has no impact on instruction. None of those capture how formative assessment actively informs and adjusts instruction to differentiate in the moment.