Empirical Education Inc. is the independent evaluator of WestEd's 2012 i3 Development grant for Internet-based Reading Apprenticeship Improving Science Education (iRAISE). This interim report provides an update on the progress of the randomized control trial (RCT) during the 2014-2015 school year. The RCT measures the impact of iRAISE on student reading literacy, as measured by the Educational Testing Service (ETS) literacy assessment, in high school science classes in 27 schools in Michigan and Pennsylvania. This report provides a summary of the 2013-2014 pilot study and its relationship to the RCT, the design summary and research questions for the RCT, an updated study timeline, preliminary results for fidelity of implementation (FOI), and initial teacher impressions from the monthly teacher surveys.