It is important that curricular standards be used to align the use of the portfolio in content areas and not just create a little technology project isolated from the rest of the curriculum. They should include writing samples with a graphic of a particular science report. Also included could be a video or a recorded message either of them reading or describing and illustration. There is an endless variety of information that could be added. That is one reason why electronic portfolios can measure and assess almost any concept or skill and in any language because each teacher can design what they wish to measure and include.
Many electronic portfolios use rubrics to assess the quality of their work.
A rubric is a criteria-rating scale, which gives the teachers a tool that allows them to track student performance. They also empower students with the knowledge of what is expected of them. Since the portfolio should be ongoing and not just a project to be completed by a certain deadline, a quality portfolio should include work samples over a long period of time. A selection of work for each month would be on way to chart progress. An example of this would be book reports.