Marx had some good ideas and some bad ones, but regardless, indoctrination into any ideology should never be the pursuit of educators. A good teacher instructs on how to think, not what to think.

Also, even if we acknowledge that there is some educational value in teaching students about Marxism, we should also acknowledge how all post modern theories and fields that use Marxism as a framework (i.e. cultural Marxism, intersectionality) act in opposition to Marxism by replacing and subverting class based focus and concerns with tokenism and identity politics.