These examples are the property of the students that created them. They are published only as examples for reference, not to be taken as ‘explicit examples of what you have to do to get a 7’.
Here are a dozen official graded example IAs from the IBO.
Here are few more examples (for DGS students only) – password available from Mr C during lesson.
One of the most difficult things is how to judge complexity and ingenuity. In the previous specification of this course, there was a document that floated around to help teachers judge these things. Although it does not apply anymore, it might give you a hint as what the moderators are looking for (if anything!)