The purpose of evaluation is to make:

The primary purpose of evaluation is to make a judgment. Evaluation goes beyond simply collecting data (measurement) to interpret that data and assign value or worth to an educational outcome, program, or student performance.

• While evaluation often informs a Decision, making the decision itself is a subsequent step, not the direct purpose of evaluation.
• Prediction involves forecasting future outcomes, which might be informed by evaluation but isn't its core function.
• An Opinion is a personal belief, whereas evaluation aims for a more systematic and evidence-based judgment.