As a former Teaneck school board member as well as a long time realtor, there is an easy answer. Bryant School is strictly for the pre-K and kindergarten population in Teaneck, and their testing is not based on standardized test scores because the children are too young for that. If you need more information on Bryant, feel free to look on the Teaneck schools' website, http://www.teaneckschools.org, or call the principal, Elyse Bourne-Busby or the school board offices at 201-833-5500.
The best source for school information in New Jersey is the State of New Jersey School Report Card which can be found at http://education.state.nj.us/rc/rc08/ This is actually the most comprehensive information you'll find on all New Jersey school districts and it gives you data from K - 12.
Bryan School also has it's own website - http://www.civ.com/schools/bryan.htm Cresskill has 2 elementary schools; Bryan is on the west side and Merritt Memorial is on the east side. Hopefully this gives you the answers you need.