Learning in one’s native tongue yields better school scores than learning in a medium language. Do you agree or disagree?

Learning in one’s native tongue yields better school scores than learning in a medium language. Do you agree or disagree? Argue your point of view.

Reminder:
The above text is a topic for task 2 in the IELTS General/Academic Training Writing test.
You should spend about 40 minutes on this task.
Write at least 250 words.

Note:
Bear in mind that to attain a higher band score for task accomplishment, you must ensure that your essay includes each of these aspects:
1. Address all aspects of the question.
2. Clearly state your standpoint.
3. Organize your essay effectively.
4. Use cohesive linking phrases.
5. Utilize a diverse vocabulary.
6. Demonstrate grammatical accuracy with varied structures.
7. Thoroughly review and edit your essay.