1. Original Statement: If he does his homework, then he gets good grades.
2. Identify the hypothesis and conclusion:
* Hypothesis: He does his homework.
* Conclusion: He gets good grades.
3. Negate both the hypothesis and conclusion:
* Negated Hypothesis: He does *not* do his homework.
* Negated Conclusion: He does *not* get good grades.
4. Switch the negated hypothesis and conclusion:
* Contrapositive: If he does *not* get good grades, then he does *not* do his homework.
Therefore, the contrapositive of the statement is: "If he does not get good grades, then he does not do his homework."