U-S-history is a beta website tool that tests students on their history knowledge and tells them how they measure up against other students in their grade level.
To use the tool you choose your grade level and time period you are studying and then answer 15 questions. You can study the history facts at the the sister page, Historial Eras.
If you are studying for a history AP or Clep exam you will also want to get American History 1 (Quickstudy Reference Guides - Academic)
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