Pre and Post Assessments

To the teachers that said Pre and Post Assessments are time wasted that can be used for instruction, I would say that they are necessary. You cannot effectively measure the level of growth in students if you aren't assessing their progress. How can you tell if a student is actually learning unless you test them before their taught, then again after their taught? At that point, only assumptions can be made, and students may not be learning what they need to, which is vital information that can only be learned if they are tested.