What is the best way to measure and evaluate what students k

What is the best way to measure and evaluate what students know?

1. One of the best way conduct a surprise test. A shap students will get.

2. conduct a simple quiz test.

3. Give assignments.

4. Ask students those who are not follow.

5. Conduct a open book exam, sothat students will appoach to a number of books.

These are technics, i am following presently.