Does your teen spend hours and hours studying the day before a test? Trying to cram all that information in at the last minute does not really make a good learning environment. Nor does it help with your teens long term learning and knowledge base. (meaning they will forget it before the end of the semester).
Or do you spend hours each night studying with your teen so they will be fully prepared for the next test?
Or worse! Did your teen stay up late, or all night, studying for a test in the morning? Resulting in a lack of sleep, resulting in poor memory function, resulting in poorer performance on that early morning test! (Sometimes sleep is better than studying)
Both of these cramming methods can be so time consuming, and energy draining. Especially when your teen has weekly tests they need to prepare for.