I put some articles’ link here for you to review the case studies.

https://files.eric.ed.gov/fulltext/ED541571.pdf?utm

https://files.eric.ed.gov/fulltext/ED541571.pdf?utm

https://files.eric.ed.gov/fulltext/ED530061.pdf?utm

https://www.uky.edu/~gmswan3/609/Clark_1983.pdf?utm