Okay kiddo, so you know how when we go to school we learn things like how to read, write, and do math? Well, sometimes adults go back to school to learn even more things about their jobs.
The scholar-practitioner model is a way that adults go back to school to learn more about their jobs. They are called "scholar-practitioners" because they learn things like a scholar (a really smart person who studies things) but they also practice what they learn in their job like a practitioner (someone who does a job).
So, imagine you're playing soccer and you already know how to play pretty well. Now imagine you want to become even better at playing. You might go to someone who is really good at soccer and learn from them, just like a scholar-practitioner learns from really smart teachers at school. Then, you would practice what you learned, just like a scholar-practitioner puts what they learned into practice at their job.
The goal of using the scholar-practitioner model is to make people better at their jobs by providing them with new knowledge and skills that they can use to improve. Does that make sense to you?