Specifications include, but are not limited to: Authorized Vendors of products are invited to provide proposals for an Optional Use contract to be considered by PSESD and the RTTT-D Consortium Member districts for the purpose of providing competitive pricing for Digital STEM Tools products. These products will be web-based instructional software products focused primarily on math and science. For purposes of this RFP, Digital STEM Tools: Are delivered via the internet Rely on the users input and/or teachers input to determine the order and pace of instruction delivery, at least in part Are diagnostic and prescriptive Provide engaging content for students Provide formative and summative assessment data that is easy for educators and leaders to interpret May or may not require teachers intervention Are available in the classroom as well as outside the school day at home, community centers, and other locations PSESD intends to procure one or more contracts on behalf of the RTTT-D Consortium Member districts to sign with the apparently successful Vendor(s).