REL Central’s has released a toolkit that may be useful if your action research project is focused on a new classroom instructional strategy: Instructional Improvement Cycle: A Teacher’s Toolkit for Collecting and Analyzing Data on Instructional Strategies. The toolkit was developed with York Public Schools in Nebraska to support the school district’s “instructional improvement cycle” in which teachers are asked to independently evaluate instructional strategies by identifying two classes with similar instructional units and then teaching one class using an innovative strategy and the other using the customary strategy. There are three tools:

Planning guide with step-by-step instructions and worksheets to help teachers plan and test a strategy.
Excel analysis tool for analyzing student data from a pre/post-intervention measure. The tool produces three results: (a) baseline equivalence to let the teacher know if the two groups are equivalent in terms of achievement prior to the intervention; (b) effect size to indicate how much better or worse, on average, students in the intervention group performed compared to the control group; and (c) confidence level to indicate whether a similar effect is likely to happen in similar classes.
Reflection guide with instructions on how to use the results.

Here is the link:
http://ies.ed.gov/ncee/edlabs/regions/central/pdf/REL_2015080.pdf