It seems like you're discussing a policy regarding science assignments and their redo options. From your message, it appears that students may have the opportunity to redo certain assignments, and it mentions several methods like Quick Checks, Unit Reviews, and Portfolios.
If the statement is that "all science assignments can be redone," then it suggests a flexible approach to assessment, allowing students to demonstrate their understanding and mastery of the material. This can be beneficial for learning, as it encourages students to revisit challenging concepts and improve their performance.
If you're looking for specific guidance on how to implement this policy or have questions about it, feel free to ask!