We know that there are many materials out there, and we appreciate you choosing Test Prep Works, LLC to meet your family's needs. What sets Test Prep Works above the competition?
The SSATB has posted errata sheets (i.e., a list of errors and the corrections) for their latest guides. If you are using one of them to prepare for the test, be sure to check them out. The issues are minor — most notable seems to be a typo regarding the time limit for the verbal section — but definitely check them out to avoid any confusion and focus on your practice! You can find the Upper Level sheet here and the Middle Level sheet here.