Below, you can read a more detailed description of this particular project.
The self-assessment piece typically happens the day students are asked to turn in or present their work. I decided to add a new component today by requiring my current students to look at a small sample of previous students' projects (before even beginning the planning process of their own project) and compare them to the rubric. Students were asked to choose the two sample projects they felt were done the best.
Here was the "student's choice." Neatness, readability, and ability to communicate the hypothesis test process were reasons given for its popularity.

It seemed like a nice "twist" to the culture of self-assessment I'm attempting to foster in my classroom. By allowing students to critically analyze others' work, I'm hoping it will carry over into their own work as well. This quasi-peer assessment exercise on the front end will hopefully help them see what "quality work" looks like in this context. I wanted to share this as a working example in my quest towards modeling self-assessment.