Our middle school used this program. Overall, i agree with blackcat above. In general, i thought it required a deeper understanding than many programs I have read about. In particular, there were challenge problems which i thought were quite good- word problems which really asked a lot of students at this level. The program did require a lot of writing, which we found to be part of it's strength (lots of written/long answer explanations) but i recognize that many on this forum find this approach onerous.
Some caveats- probably due to our district's strict "one size fits all" approach, the program was too slow-paced and low-level for my kids, by quite a bit (years). The above-mentioned challenge problems were good ones, but at our school were assigned once a week as a challenge; our kids generally solved the problems before the class period was done. (They were still expected to write a logical, coherent expalnation of their solution, which could take a bit more time).
Also, our district supplements math heavily with local, teacher-developed materials, and I didn't make any effort to distinguish between the commercial curriculum and the local supplements, as our kids didn't need any paretal involvement. I let them handle it on their own, with the exception of reading their challenge problem solutions, mainly out of curiousity (as long as the solution could be supported, their answer was acceptable, so their different approaches were often interesting to read and gave insight into their thought processes).
Last edited by cricket3; 07/19/15 08:22 AM. Reason: Typos