HTML Levels Percentages report (Good Javascript/jquery essential)

Please Read the details carefully. This project demands accurate calculations being made with Javascript within the page. Will will not award this project if we thing you have not understood our needs. The Attached report is known as a Levels Percentages report. It looks at all the Grade levels for a group of children and works out the percentages getting a selected level grade, both for the whole group (usually a year group) and the separate forms/ classes under them. We would like an html page that will take data in JSON format and create the selected report. We would also like the report to be able to filter on the pupils in the group to give percentages for selected subgroups and this is done by the user using the page. Data will be put into the page in json format. We will put the data in when we render the page, not by ajax. The data will be a json list with records of the following format {'Fullname':'xxxx','Class':'xxx','Gender':M/F,'SEN':T/F,'EAL':T/F,'G&T':T/F,'MoreAble':T/F','Level':'XX'} The Javascript should work out the percentages to two decimal points. The Javascript should have the ability to work out and display percentages based upon records filtered by Gender SEN G&T MoreAble The Report will also need to be printable on an A4 page Items such as subject name will be put in by us when rendering, but the report should show if the data is filtered