So, professional educator here, with fifteen years of high school teaching experience. If the sample passages and questions on the front page accurately reflect what's inside this, I would not let my kids go anywhere near it.

You've chosen to use the most generic AI-generated prose, when you could have licensed or hired writers to craft thoughtful, rich passages. I doubt you've consulted any serious standardized test item writers in the construction of what is essentially a standardized test item-based curriculum. This is the pedagogical equivalent of a Lunchable--mass produced, wrapped in plastic, and basically nutrition-free.