The ISEE test is available on varying dates, for specifics including registration, test fees, test dates, times and all relative information, go to: http://docs.erbtest.org/pdfs/ISEE_Student_Guide_07_08.pdf
Your complete overall final test scores, usually become available for release to your choice of schools after about 1 week to 10 days after completion of the ISEE test.
Before sitting the ISEE, applicants will need to complete a formal application for each school they intend to submit to. One test only is allowed in any six-month period.
There is not a universal ‘pass’ score for the ISEE Test
There there are acceptable score level(s) for specific school(s). You can check some of these by visiting these websites: http://www.educationplanner.com/ — http://www.boardingschoolreview.com/ — http://www.allprivateschools.org/