Complex sentence: One huge benefit to tech-based testing is the option to give students immediate feedback on their answers, which allows them to know how they are doing and will help push them to improve or give them confidence that they are doing well.
Split into simpler sentences: One huge benefit to tech-based testing is the option to give students immediate feedback on their answers. When students get these responses, they are able to know how they are doing and this can help push them to improve or give them confidence that they are doing well.