The study is quasi-experimental, I have 3 experimental 1 control group. Each Group has between 20-25 people. I will examine the effectiveness of the method I applied by using the pre-test last test. It's okay up here.

I have a model set by the leading expert in the field. This model demonstrates how the method effects success. My main goal was actually to validate this model. But I couldn't find out how to do it.

The model is as follows. I have measurement tools for all variables. How can I verify the change that occurred in the post test from the pre-test? My goal is to validate the change in the latest academic achievement by using structural equation modeling using repetitive measurement scores (pre-test).

Here is the model: 

Best regards